update to Ruby 2.0, DevKit 4.7.2, Omnibus Chef 11.10.4 (in favor of chef gem install), Git 1.9, ConEmu 140304, etc. (see CHANGELOG)
Merge pull request #43 from tknerr/update-tools

update to Ruby 2.0, DevKit 4.7.2, Omnibus Chef 11.10.4 (in favor of chef gem install), etc...