New Activity: Checkers.
Added basic layout with basic flexibilty and abstraction.
Movement rules were added..
Created a board that keeps track of all the pieces.
Highlighted the possible space to move to..
Switched GridView to x-y coordinates..

Individuals that collaborated: Josh, Justin, Hussain
Initial UI. Not completed yet.
Merge branch 'adil-development'
Server API list of functions (more of a java api more than an http api)