Ajout de la documentation (backup du wiki)

doc/img/1_format.png

doc/img/1_gsclib.png

doc/img/1_help.png

doc/img/1_newproj.png

doc/img/1_newproj_rtl.png

doc/img/1_ps.png

doc/img/1_pssetup.png

doc/img/1_sdf.png

doc/img/1_sighier.png

doc/img/1_simubeh.png

doc/img/1_simupnr.png

doc/img/1_startsimbeh.png

doc/img/1_vsim.png

doc/img/2_help.png

doc/img/3_floorplan.png

doc/img/3_globalnet.png

doc/img/3_help.png

doc/img/3_layout_pin.png

doc/img/3_layout_place.png

doc/img/3_layout_route.png