Update Berkshelf community endpoint
Switch to Apache v2.0 license

Properly open-sources this cookbook
Drop unused Thorfile
Ensure README is used as long_description
Loosen version pin for et_fog
Update spec_helper for Server v2
Add testing for Ubuntu 14.04, use better EC2 names
Add supports statement to metadata
Clean up CHANGELOG formatting, add dates
Bump to v2.2.0