Found a better version of the scratch-paper/doodle code.
It's a Doodle.java file that uses a DoodleView.java (I'll have to
check if the view one uploaded - they should both have the same date).

I didn't plug it into the main program - I'm concerned I might break
something. James, can you take a look at that? I know it needs a method
to create the Doodle as a new intent and start the activity, but adding
the xml for the action bar button is where I'm stumped.
Found a better tutorial for the doodle option. The Doodle.java activity uses the DoodleView.java. Also added some supposrting files, so it should just need to be plugged into the math.java file. James, could you take a look at that? The xml part is what I'm really unfamiliar with for adding it to an action bar button.