iWork on doc
Merge branch 'master' of https://github.com/pylayers/pylayers
modif in doc
Change README
work on doc
work on doc
adding editor graph
modif in body
clearing notebooks
Merge branch 'master' of github.com:pylayers/pylayers

Conflicts:
	pylayers/antprop/antenna.py
	pylayers/gis/layout.py
recovering antenna.py
fixing bugs in body