Renamed GameMgr to LevelMgr
Added tiny level editor

LevelMgr now has a tiny level edition tool
Added Save/Load functionnality to level editor

LevelMgr script can now save and load ".lvl" files to store level
configurations
Modified Input settings

Keyboard movement input will now feel like the joystick one
Modified Player Control

Player is now able to go faster than the "Max Velocity" variable, while
using punch kickback
Merge remote-tracking branch 'upstream/master'