hide middle markers if there is not enough space
Make possible to add new vertex on top of an other feature vertex
Do not reenable edit if it's yet enabled
Do not reenable edit if it's yet enabled (bis)
Send event when multi is enabled
0.6.0
Add bower.json (fix #2)
Compute middleMarker position from pixel (fix #4)
Enable mocha-phantomjs
Removed unused effroi
Define viewport, required for d'n'd simulation