Fix Chef 11 compatability
Use Digester
bump requirement for Chef 11
support both Chef 10.x and 11.x line
Merge pull request #328 from RiotGames/fix-for-chef-11

Fix for chef 11
lock ridley version to safe level
version bump 1.1.3
Merge remote-tracking branch 'origin/1-1-stable' into master-plus-1-1-stable

Conflicts:
	berkshelf.gemspec
	lib/berkshelf.rb
Merge pull request #334 from RiotGames/master-plus-1-1-stable

Merge 1-1-stable into master