Tests and implementation for #check_coords, which checks if a ship is being placed on already-occupied coords. Plus #add-ship method for randomly generating coords.
Starting spec for FleetGenerator
Added test for #add_ship to make sure it returns coords
Spec and implementation for FleetGenerator
Writing test for #add_ship for FleetGenerator
Merge branch 'master' of https://github.com/bneuman619/BattleshipAjax2