Merge pull request #10 from nitishjindal/master

paypal sandbox setup and updating the app name
Merge pull request #11 from nitishjindal/master

updating the static txt
Implemented Rewards Menu

working, no blocked items yet
Unselectable items in list

Made coins not selectable if user hasn't earned them...working on
graying them out. Also fixed some small typos in some other things.
Grayed out menu items

Rewards menu items grayed out until they're earned.