Adding FragmentController interface, along with makeFirstFragment method, encapsulating the fragment creation I already had.
Adding a basic HelloWorld MotivationActivity that now launches when I click the Get Motivation button. FragmentController handles this from the Fragment.
Adding the AddEditFragmentHabit. Vary basic at this point.
Adding Tumblr OAuth key to MotivationActivity.
Adding TumblrApi to handle tumblr image fetches. Can build working tumblr URLs with this commit.