fix Map polyfill issue. Fixes #21
almost done proxying the camera
finished CameraProxy
minor changes + doc
Merge branch 'master' of github.com:anthill/bordeaux3d into camera-event

Conflicts:
	front/src/buildingMap.js
	package.json
merging camera events with building selection
first shot at first-person controls
Fixes #29
first shot (arrows not working)
first shot at city controls
factorizing meshToBuilding out
the right buildings load when on first person view + esc to get back to sky view
Adding zoom via mouse wheel +  fix minor Chrome/Firefox inconsistencies
Walking at constant distance from the floor
Merge pull request #34 from DavidBruant/city-controls

City controls