update read me to contain something about tests
installed node 0.8 and reinstalled all node_modules
optimized spec describes to be readable in --verbose mode
Collidables now get an unique id
added jslint info about node.js and put every lib file in strict mode
fix collidable id (with more specs)
Added previously hitted object to leaveHit event
added some more specs for hit and leaveHit events and three elements
stopHitting event
renamed event hit to startHitting and added a new hit event
bump version to v0.1.0