am f64e9a8f: am 03345389: Merge "Delete everything from the shareables/ directory to save space on dac. All of the training ZIPs are now located in development/samples/training/zips/ Added a readme file to explain this change toward using cloud storage instead." into 

* commit 'f64e9a8fe9e6a75bd217705cd15a72b2dedf00cf':
  Delete everything from the shareables/ directory to save space on dac. All of the training ZIPs are now located in development/samples/training/zips/ Added a readme file to explain this change toward using cloud storage instead.