Added position properties to tiles
Added position properties to tiles

These will be used later on for the click handlers when we dispatch
and action. Since the position is a parameter, we need to set it,
and it makes sense to just use the properties of the class, since
those don't change and we're already using them for references elsewhere

thorsteinson/redux-tic-tac-toe,thorsteinson/redux-tic-tac-toe