added Quby menu item to header
added Quby to Rules
added css for quby menu
added layout for Quby
added actual content for Quby DSL
added nanoc guard
merged Gemfile.lock
Revert "added nanoc guard"

This reverts commit 9f7f072a706e4a4e2de0507490f9b60700ee5293.

Conflicts:
	Gemfile.lock
Merge pull request #2 from roqua/im-adding-opencpu

Add Quby DSL documentation