Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
update Readme
update Readme
Update Chinese tutorial for Gradle Way
Update English Tutorial for Gradle Way
Merge branch 'dev'
add circle progress
add circle progress demo
add MaterialDesignLibrary
add MaterialDeisignLibrary Demo
add switch animation
add switch animation demo
update markdown doc