test improvement for ray_cast problem #48
small error after changing ring_segments causing there to be an old reference to the selected loop
Clean up minor mistakes in documentation.

Makes it easier/simpler to read.
Merge branch 'master' of https://github.com/CGCookie/retopology
Fix #55

Will only draw backbone segements when debug > 1
Remove RMB from header, using only X for deletion
fix #58

improve #59
Merge branch 'master' of https://github.com/CGCookie/retopology
fix #57
improve #56 (more to do)

fix small bug related to #58
fix #56
small ui fix with color in loop vs guide mode

sticky force new off.
highlight improvement when adding new cut to exisitng path in loop mode.
New strokes are hooked up to ring and vertex counts

New panel for n_rings in a segment
added *.pyc to gitigore
Reset to default ray_cast behavior to demonstrate to devs to find out if this is API problem

since new hack was only working some times.

undo code if selected ring is not in the selected path.  This should not happen, but it does
Will need to further inveistigate
Merge branch 'master' of https://github.com/CGCookie/retopology
typo
unusual selection scenario handled by undo state preservation
squash print error when loop cut fails which masks cause of failure