First of all you need to know that accordingly to Semantic Versioning guidelines version 2.x don't has backwards compatibility to version 1.x!

Assets (fonts, stylesheets)

You need to update the Material Design Iconic Font assets, check that font files and *.css are new.

New default syntax

For icons: md md-* zmdi zmdi-* (Note: zmdi, base class is only needed by icons and is necessary)

For helper classes: md-* zmdi-hc-*

New icons names

md-accessibility zmdi-male

md-account-balance zmdi-balance

md-account-balance-wallet zmdi-balance-wallet

md-account-child zmdi-accounts-alt

md-add-shopping-cart zmdi-shopping-cart-add (or zmdi-shopping-cart-plus since 2.1.0)

md-alarm-on zmdi-alarm-check

md-announcement zmdi-comment-alert

md-assessment zmdi-chart

md-assignment-ind zmdi-assignment-account

md-assignment-late zmdi-assignment-alert

md-assignment-turned-in zmdi-assignment-check

md-autorenew zmdi-refresh

md-backup zmdi-cloud-upload

md-bug-report zmdi-bug

md-cached zmdi-refresh-alt

md-class zmdi-book

md-credit-card zmdi-card

md-dashboard zmdi-view-dashboard

md-description zmdi-file-text

md-done zmdi-check

md-done-all zmdi-check-all

md-event zmdi-calendar

md-exit-to-app zmdi-sign-in

md-explore zmdi-compass

md-extension zmdi-puzzle-piece

md-face-unlock zmdi-face

md-find-in-page zmdi-search-in-file

md-find-replace zmdi-search-replace

md-get-app zmdi-download

md-grade zmdi-star

md-highlight-remove zmdi-close-circle-o

md-history zmdi-time-restore

md-https zmdi-lock

md-input zmdi-square-right

md-language zmdi-globe-alt

md-launch zmdi-open-in-new

md-list zmdi-view-list-alt

md-loyalty zmdi-label-heart

md-note-add zmdi-file-add (or zmdi-file-plus since 2.1.0)

md-open-with zmdi-arrows

md-pageview zmdi-search-in-page

md-payment zmdi-card

md-perm-camera-mic zmdi-camera-mic

md-perm-contact-cal zmdi-account-calendar (or zmdi-calendar-account since 2.1.0)

md-perm-data-setting zmdi-network-setting

md-perm-device-info zmdi-smartphone-info

md-perm-identity zmdi-account-o

md-perm-media zmdi-collection-folder-image

md-perm-phone-msg zmdi-phone-msg

md-perm-scan-wifi zmdi-network-wifi-scan (or zmdi-network-wifi-info since 2.1.0)

md-query-builder zmdi-time

md-question-answer zmdi-comments

md-redeem zmdi-card-giftcard

md-report-problem zmdi-alert-triangle

md-restore zmdi-time-restore

md-room zmdi-pin

md-schedule zmdi-time

md-settings-applications zmdi-settings-square

md-settings-backup-restore zmdi-time-restore-setting

md-settings-bluetooth zmdi-bluetooth-setting

md-settings-cell zmdi-smartphone-setting

md-settings-display zmdi-brightness-setting

md-settings-ethernet zmdi-code-setting

md-settings-input-antenna zmdi-input-antenna

md-settings-input-component zmdi-input-composite

md-settings-input-composite zmdi-input-composite

md-settings-input-hdmi zmdi-input-hdmi

md-settings-input-svideo zmdi-input-svideo

md-settings-overscan zmdi-fullscreen-alt

md-settings-phone zmdi-phone-setting

md-settings-power zmdi-power-off-setting

md-settings-remote zmdi-remote-control

md-settings-voice zmdi-mic-setting

md-shop zmdi-case-play

md-shop-two zmdi-collection-case-play

md-speaker-notes zmdi-comment-list

md-star-rate zmdi-star

md-stars zmdi-star-circle

md-store zmdi-local-store

md-subject zmdi-format-subject

md-swap-horiz zmdi-swap

md-swap-vert zmdi-swap-vertical- (Yes, I know... So use zmdi-swap-vertical since 2.1.0)

md-swap-vert-circle

md-system-update-tv zmdi-square-down

md-theaters zmdi-movie-alt

md-thumbs-up-down zmdi-thumb-up-down

md-toc zmdi-view-toc

md-today zmdi-calendar-alt

md-track-changes zmdi-portable-wifi-changes

md-trending-neutral zmdi-trending-flat

md-turned-in zmdi-bookmark

md-turned-in-not zmdi-bookmark-outline

md-verified-user zmdi-shield-check

md-visibility zmdi-eye

md-visibility-off zmdi-eye-off

md-wallet-giftcard zmdi-card-giftcard

md-wallet-membership zmdi-card-membership

md-wallet-travel zmdi-card-travel

md-work zmdi-case

md-error zmdi-alert-circle

md-warning zmdi-alert-triangle

md-av-timer zmdi-time-countdown

md-games zmdi-gamepad

md-high-quality zmdi-hq

md-loop zmdi-refresh-sync

md-mic-none zmdi-mic-outline

md-my-library-add zmdi-collection-add (or zmdi-collection-plus since 2.1.0)

md-my-library-books zmdi-collection-text

md-my-library-music zmdi-collection-music

md-new-releases zmdi-alert-polygon

md-not-interested zmdi-block

md-pause-circle-fill zmdi-pause-circle

md-play-arrow zmdi-play

md-play-circle-fill zmdi-play-circle

md-playlist-add zmdi-format-playlist-add (or zmdi-playlist-plus since 2.1.0)

md-play-shopping-bag zmdi-case-play

md-queue zmdi-collection-add (or zmdi-collection-plus since 2.1.0)

md-queue-music zmdi-format-queue-music (or zmdi-playlist-audio since 2.1.0)

md-recent-actors zmdi-accounts-list

md-snooze zmdi-alarm-snooze

md-subtitles zmdi-view-subtitles

md-video-collection zmdi-collection-video

md-web zmdi-view-web

md-business zmdi-city-alt

md-call zmdi-phone

md-call-end zmdi-phone-end

md-call-made zmdi-arrow-out

md-call-merge zmdi-arrow-merge

md-call-missed zmdi-arrow-missed

md-call-received zmdi-arrow-in

md-chat zmdi-comment-text-alt

md-clear-all zmdi-format-clear-all

md-contacts zmdi-accounts-list-alt

md-dialer-sip zmdi-phone-sip

md-dnd-on zmdi-block-alt

md-forum zmdi-comments

md-import-export zmdi-swap-vertical- (Yes, I know... So use zmdi-swap-vertical since 2.1.0)

md-invert-colors-on zmdi-invert-colors

md-live-help zmdi-pin-help

md-location-off zmdi-pin-off

md-location-on zmdi-pin

md-message zmdi-comment-text

md-messenger zmdi-comment

md-no-sim zmdi-card-off

md-quick-contacts-dialer zmdi-account-box-phone

md-quick-contacts-mail zmdi-account-box-mail

md-ring-volume zmdi-phone-ring

md-stay-current-landscape zmdi-smartphone-landscape

md-stay-current-portrait zmdi-smartphone

md-stay-primary-landscape zmdi-smartphone-landscape

md-stay-primary-portrait zmdi-smartphone

md-swap-calls zmdi-swap-alt

md-textsms zmdi-comment-dots

md-vpn-key zmdi-key

md-add zmdi-plus

md-add-box zmdi-plus-box (or zmdi-plus-square since 2.1.0)

md-add-circle zmdi-plus-circle

md-add-circle-outline zmdi-plus-circle-o

md-backspace zmdi-tag-backspace (or zmdi-tag-close since 2.1.0)

md-clear zmdi-close

md-content-copy zmdi-copy

md-content-cut zmdi-cut

md-content-paste zmdi-assignment-o (or zmdi-paste since 2.1.0)

md-create zmdi-edit

md-drafts zmdi-email-open

md-mail zmdi-email

md-markunread zmdi-email

md-remove zmdi-minus

md-remove-circle zmdi-minus-circle

md-remove-circle-outline zmdi-minus-circle-outline

md-reply zmdi-mail-reply

md-reply-all zmdi-mail-reply-all

md-report zmdi-alert-octagon

md-send zmdi-mail-send

md-access-alarm zmdi-alarm

md-access-alarms zmdi-alarm

md-access-time zmdi-time

md-add-alarm zmdi-alarm-add (or zmdi-alarm-plus since 2.1.0)

md-airplanemode-off zmdi-airplanemode-inactive (or zmdi-airplane-off since 2.1.0)

md-airplanemode-on zmdi-airplanemode-active (or zmdi-airplane since 2.1.0)

md-battery-20 deprecated

md-battery-30 deprecated

md-battery-50 deprecated

md-battery-60 deprecated

md-battery-80 deprecated

md-battery-90 deprecated

md-battery-charging-20 deprecated

md-battery-charging-30 deprecated

md-battery-charging-50 deprecated

md-battery-charging-60 deprecated

md-battery-charging-80 deprecated

md-battery-charging-90 deprecated

md-battery-charging-full zmdi-battery-charging (or zmdi-battery-flash since 2.1.0)

md-battery-full zmdi-battery

md-battery-std zmdi-battery

md-bluetooth-disabled zmdi-bluetooth-off

md-bluetooth-searching zmdi-bluetooth-search

md-data-usage zmdi-chart-donut

md-developer-mode zmdi-code-smartphone (or zmdi-smartphone-code since 2.1.0)

md-dvr zmdi-tv-list

md-gps-fixed zmdi-gps-dot

md-gps-not-fixed zmdi-gps

md-location-disabled zmdi-gps-off

md-location-searching zmdi-gps

md-multitrack-audio zmdi-graphic-eq

md-network-cell zmdi-network

md-now-wallpaper zmdi-wallpaper

md-now-widgets zmdi-widgets

md-screen-lock-landscape zmdi-smartphone-landscape-lock

md-screen-lock-portrait zmdi-smartphone-portrait-lock

md-screen-lock-rotation zmdi-screen-rotation-lock

md-sd-storage zmdi-card-sd

md-settings-system-daydream zmdi-daydream-setting (or zmdi-cloud-box since 2.1.0)

md-signal-cellular-0-bar zmdi-network-outline

md-signal-cellular-1-bar deprecated

md-signal-cellular-2-bar deprecated

md-signal-cellular-3-bar deprecated

md-signal-cellular-4-bar zmdi-network

md-signal-cellular-connected-no-internet-0-bar deprecated

md-signal-cellular-connected-no-internet-1-bar deprecated

md-signal-cellular-connected-no-internet-2-bar deprecated

md-signal-cellular-connected-no-internet-3-bar deprecated

md-signal-cellular-connected-no-internet-4-bar zmdi-network-warning (or zmdi-network-alert since 2.1.0)

md-signal-cellular-no-sim zmdi-card-off

md-signal-cellular-null zmdi-network-outline

md-signal-cellular-off zmdi-network-off

md-signal-wifi-0-bar zmdi-network-wifi-outline since 2.1.0

md-signal-wifi-1-bar deprecated

md-signal-wifi-2-bar deprecated

md-signal-wifi-3-bar deprecated

md-signal-wifi-4-bar zmdi-network-wifi

md-signal-wifi-off zmdi-network-wifi-off

md-wifi-lock zmdi-network-wifi-lock

md-wifi-tethering zmdi-portable-wifi

md-attach-file zmdi-attachment-alt

md-attach-money zmdi-money

md-format-underline zmdi-format-underlined

md-insert-chart zmdi-chart

md-insert-comment zmdi-comment-alt-text

md-insert-drive-file zmdi-file

md-insert-emoticon zmdi-mood

md-insert-invitation zmdi-calendar

md-insert-link zmdi-link

md-insert-photo zmdi-image

md-merge-type zmdi-arrow-merge

md-mode-comment zmdi-comment-alt

md-mode-edit zmdi-edit

md-publish zmdi-upload

md-vertical-align-bottom zmdi-format-valign-bottom

md-vertical-align-center zmdi-format-valign-center

md-vertical-align-top zmdi-format-valign-top

md-cloud-queue zmdi-cloud-outline

md-file-download zmdi-download

md-file-upload zmdi-upload

md-folder-open zmdi-folder-outline

md-computer zmdi-laptop

md-keyboard-alt zmdi-mood

md-keyboard-arrow-down zmdi-chevron-down

md-keyboard-arrow-left zmdi-chevron-left

md-keyboard-arrow-right zmdi-chevron-right

md-keyboard-arrow-up zmdi-chevron-up

md-keyboard-backspace zmdi-long-arrow-left

md-keyboard-capslock zmdi-eject-alt

md-keyboard-control zmdi-more-horiz (or zmdi-more since 2.1.0)

md-keyboard-return zmdi-long-arrow-return

md-keyboard-tab zmdi-long-arrow-tab

md-keyboard-voice zmdi-mic

md-laptop-windows zmdi-laptop

md-phone-android zmdi-smartphone-android

md-phone-iphone zmdi-smartphone-iphone

md-phonelink zmdi-devices

md-phonelink-off zmdi-devices-off

md-security zmdi-shield-security

md-sim-card zmdi-card-sim

md-add-to-photos zmdi-collection-add (or zmdi-collection-plus since 2.1.0)

md-adjust zmdi-dot-circle-alt

md-assistant-photo zmdi-flag

md-audiotrack zmdi-audio

md-blur-on zmdi-blur

md-brightness-1 zmdi-circle

md-collections zmdi-collection-image

md-color-lens zmdi-palette

md-control-point zmdi-plus-circle-o

md-control-point-duplicate zmdi-plus-circle-o-duplicate

md-details zmdi-triangle-down

md-exposure-minus-1 zmdi-neg-1

md-exposure-minus-2 zmdi-neg-2

md-exposure-zero zmdi-zero

md-exposure-plus-1 zmdi-plus-1

md-exposure-plus-2 zmdi-plus-2

md-filter zmdi-collection-image-o

md-filter-1 zmdi-collection-item-1

md-filter-2 zmdi-collection-item-2

md-filter-3 zmdi-collection-item-3

md-filter-4 zmdi-collection-item-4

md-filter-5 zmdi-collection-item-5

md-filter-6 zmdi-collection-item-6

md-filter-7 zmdi-collection-item-7

md-filter-8 zmdi-collection-item-8

md-filter-9 zmdi-collection-item-9

md-filter-9-plus zmdi-collection-item-9-plus

md-filter-drama zmdi-cloud-outline-alt

md-filter-hdr zmdi-landscape

md-filter-none zmdi-collection-item

md-filter-vintage zmdi-flower

md-flash-on zmdi-flash

md-grid-on zmdi-grid

md-hdr-on zmdi-hdr

md-healing zmdi-plaster

md-image-aspect-ratio zmdi-aspect-ratio

md-iso zmdi-exposure-alt

md-leak-add zmdi-leak

md-lens zmdi-circle

md-looks-1 zmdi-n-1-square

md-looks-2 zmdi-n-2-square

md-looks-3 zmdi-n-3-square

md-looks-4 zmdi-n-4-square

md-looks-5 zmdi-n-5-square

md-looks-6 zmdi-n-6-square

md-movie-creation zmdi-movie

md-navigate-before zmdi-chevron-left

md-navigate-next zmdi-chevron-right

md-panorama zmdi-image-alt

md-panorama-fisheye zmdi-circle-o

md-photo zmdi-image

md-photo-album zmdi-book-photo (or zmdi-book-image since 2.1.0)

md-photo-camera zmdi-camera

md-photo-library zmdi-collection-image

md-portrait zmdi-account-box-o

md-remove-red-eye zmdi-eye

md-straighten zmdi-ruler

md-style zmdi-labels

md-switch-camera zmdi-camera-switch

md-switch-video zmdi-videocam-switch

md-tag-faces zmdi-mood

md-timelapse zmdi-time-interval

md-timer-3 zmdi-sec-3

md-timer-10 zmdi-sec-10

md-timer-auto zmdi-account

md-wb-cloudy zmdi-cloud

md-wb-incandescent zmdi-incandescent (or zmdi-lamp since 2.1.0)

md-wb-irradescent zmdi-wb-iridescent (or zmdi-iridescent since 2.1.0)

md-wb-sunny zmdi-sun

md-beenhere zmdi-badge-check

md-directions-transit zmdi-directions-subway

md-flight zmdi-airplanemode-active (or zmdi-airplane since 2.1.0)

md-local-attraction zmdi-local-activity

md-local-print-shop zmdi-local-printshop

md-local-restaurant zmdi-local-dining

md-location-history zmdi-pin-account

md-place zmdi-pin

md-restaurant-menu zmdi-local-dining

md-store-mall-directory zmdi-local-store

md-terrain zmdi-landscape

md-cancel zmdi-close-circle

md-arrow-drop-down-circle zmdi-caret-down-circle

md-arrow-drop-down zmdi-caret-down

md-arrow-drop-up zmdi-caret-up

md-expand-less zmdi-chevron-up

md-expand-more zmdi-chevron-down

md-bluetooth-audio zmdi-bluetooth-search

md-dnd-forwardslash zmdi-block-alt

md-do-not-disturb zmdi-block

md-drive-eta zmdi-directions-car

md-event-available zmdi-calendar-check

md-event-busy zmdi-calendar-remove (or zmdi-calendar-close since 2.1.0)

md-event-note zmdi-calendar-note

md-mms zmdi-comment-image

md-more zmdi-tag-more

md-phone-bluetooth-speaker zmdi-phone-bluetooth

md-play-download zmdi-case-download since 2.1.0

md-play-install zmdi-case-check since 2.1.0

md-sd-card zmdi-card-sd

md-sim-card-alert zmdi-card-alert

md-sms zmdi-comment-dots

md-sms-failed zmdi-comment-alert

md-sync zmdi-refresh-sync

md-sync-disabled zmdi-refresh-sync-disabled (or zmdi-refresh-sync-off since 2.1.0)

md-sync-problem zmdi-refresh-sync-problem (or zmdi-refresh-sync-alert since 2.1.0)

md-system-update zmdi-smartphone-download

md-time-to-leave zmdi-directions-car

md-voice-chat zmdi-comment-video

md-vpn-lock zmdi-globe-lock

md-domain zmdi-city-alt

md-location-city zmdi-city

md-notifications-on zmdi-notifications-active

md-party-mode zmdi-camera-party-mode

md-group zmdi-accounts

md-group-add zmdi-accounts-add

md-people zmdi-accounts

md-people-outline zmdi-accounts-outline

md-person zmdi-account

md-person-add zmdi-account-add

md-person-outline zmdi-account-o

md-plus-one zmdi-plus-1

md-poll zmdi-chart

md-public zmdi-globe

md-school zmdi-graduation-cap

md-whatshot zmdi-fire

md-check-box zmdi-check-square

md-check-box-outline-blank zmdi-square-o

md-radio-button-off zmdi-circle-o

md-radio-button-on zmdi-dot-circle

If you think that I forgot something - let me know via GitHub issue.