Merge "revisions to the Building Your First app class with feedback from...
Merge "revisions to the Building Your First app class with feedback from mpawlan (thank you!)" into nyc-dev am: 96357564 am: 16fe510e am: 4091aeba am: fa2b50db
am: 520d217d
Change-Id: I69c7a7d38ff421f81fdf0d64fcead8c442c25c32