am 46e81a38: am 31f3da3a: am 9cfe3d44: am dc567ef5: am c00fe97b: Merge "AnimationsDemo sample code for Animations training class." into jb-dev-docs

* commit '46e81a3853e6aaaed0e57872f01c0a1c724f099b':
  AnimationsDemo sample code for Animations training class.