added X11 shades of gray, changed background to gray93
First small fixups/restoring the gray function
reinstate gray method, indent blk
Add spec for gray 0.93 (new default color)
Remove spec asserting number of colors in shoes - changes too easy/brittle
Merge branch 'shades_of_gray' of github.com:KCErb/shoes4 into KCErb-shades_of_gray

Conflicts:
	lib/shoes/color.rb
Remove auto generated grayxx methods in favor of using gray(0.xx) instead
grey alias
Fix name duplication error - my bad