links.py created
Merge branch 'master' of github.com:pylayers/pylayers

Conflicts:
	pylayers/simul/links.py
iwork on link class
modif ray
add _saveh5 in rays
modif in sig
add _saveh5 in signature
change in channel
add save_h5 in channel
save T chann
add _saveh5 in Tchannel
Merge branch 'master' of github.com:pylayers/pylayers