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
References new qt recipe
References new location for postgres recipe.
Revert "References new location for postgres recipe."

This reverts commit 46280086124dd2a4f8a3d3a46f255f7d980cc5b0.
Merge branch 'mavericks'

Conflicts:
	Cheffile.lock
	soloistrc
Edited readme to reflect Mavericks default.
Set up workstation runlist for minifast