am 9b873995: am 46e81a38: am 31f3da3a: am 9cfe3d44: am dc567ef5: am c00fe97b: Merge "AnimationsDemo sample code for Animations training class." into jb-dev-docs

* commit '9b873995105684d83e538214b827f729693011df':
  AnimationsDemo sample code for Animations training class.