Add  Transitions Everywhere
Add SeekArc
Add Material Design Android Library
Add Material Design Icons
Add Floating Action Button
Add scrollscreenshot
Add ASNE
Add Android Signature Pad
Add ExpandableLayout
Add Teleport
Add multidex
Add ANR-WatchDog
Remove to-be-added.md
Add 国外著名 Android 开发者信息 https://github.com/android-cn/android-dev-com
add GridViewWithHeaderAndFooter
add GridViewWithHeaderAndFooter
add GridViewWithHeaderAndFooter
add GridViewWithHeaderAndFooter
add GridViewWithHeaderAndFooter
add GridViewWithHeaderAndFooter