mavericks requires gem chef 11.6

http://stackoverflow.com/questions/15912212/error-while-launching-knife-configure-command
bumped SHA LibreOffice 4.1.1
Mavericks 10.9 requires 'mavericks' sprout branch
bumped MySQL to 5.6.13
This time MySQL will work--I tested it
Correct sha
recipes that don't build under Mavericks are commented-out
Merge remote-tracking branch 'origin/master' into mavericks

Conflicts:
	Cheffile.lock
Merge remote-tracking branch 'origin/master' into mavericks

Conflicts:
	site-cookbooks/meta/recipes/osx_development.rb
	site-cookbooks/meta/recipes/ruby_development.rb
Bumped SHAs
Instructions for installing under Mavericks
Add sprout-osx-git cookbook reference

And updates to HEAD of mavericks branch on sprout.
Updates to use new recipe locations

As the old shim recipes were deleted.
Updates ccmenu to use new recipe location
Use new gitx recipe and bump sha

Signed-off-by: Brian Cunnie <cunnie@pivotallabs.com>
new cookbooks for textmate, rubymine, keycastr
sprout-osx-rubymine cookbook
Updates README to reflect that master is now used for mavericks
Reenables postgress and qt recipies and switches from rvm to rbenv

[#61416160]
adds rbenv cookbook