make Toast an instance variable
instrument life cycle callbacks for logging
assign colors to chars remaining
put background image on with 9-patch file
don't post to Twitter if message is empty.
Use tools:text for placeholder in layout display
use Hint for placeholder prompt text on screen.
added Service to sent Tweet and broadcast receiver for Toast notification.
add permissions for YambaTweet Service
Add contract class from YambaService to access Content Provider and set permissions.
Add Timeline Activity based on ListView and and simple_list_item2 for displaying tweets.
Use custom timeline row with RelativeLayout
Add a menu for launching TweetActivity
Refactor TweetActivity into a fragment. Advantage is to be able to reuse it, e.g. on a larger table screen where the activity could pull in multiple fragments.
Don't shut down activity from within fragment. Use interface to de-couple the shut-down in a more loosely-coupled way.