Soldier Punch and Assault Rifle

Added soldier punch and assault rifle images
Added in Assault Rifle

Added assault rifle functionality and zombie attack.
Added Assault Rifle

Added assault rifle sprite to tmx files and tried to add 3 round burst
to its fire mechanism.
Fixed Assault Rifle

Three round burst works now.
Readme tweak.
Merge Rhea's AR
Refactor to use a for loop.

Really though? Why?