Intro state now works with mosue clicks
fixed build path on my eclipse to properly retrieve images
Added methods for tile based movement

I added methods for move right/left/up/down. These (or some later variant) should be the only ones available for public movement. From these mehtods I check for any collision, etc. Since this is a turn based game, there is no need to be constantly updating the objects. the only changes that need to be made are when they are either moved or set to attack, etc. I also added some test code, so you can move the mech around by clicking the left/top/right/bottom of the screen.