Did a whooole lot of things.

Added home screen with buttons (which take you to activities):

PLAY, taking you to a CURRENT RUN activity, which initializes (on run/resume) a PLAY activity, in charge of the Maze Challanges.
TUTORIAL (non-functional)
SETTINGS, with the option

Also,
*Shared Preferences* are WORKING! We know where you stopped so you can move on next time :)

What isn't implemented yet:
-Tutorial
-Chronometer
-All stages
-Lots of stuff