Adding serverspec tests for rbenv
Refactor build dependency apt packages into own tasks file
Adding tasks files for installing homebrew and yum build dependencies
Adding support for tested platforms.  Make sure ansible-version is >= 1.7.1 for homebrew_tap module
Add experimental support for Arch Linux (untested b/c kitchen-ansible can't install ansible on Arch yet)
Merge pull request #10 from trinitronx/add-support-for-rhel-centos

Add support for rhel & centos