Update to latest CentOS 6.5 image for Rackspace
Update Google to use latest CentOS image
Update to latest Ubuntu images for AWS/Joyent/Rackspace
Remove (unconfigurable) disk_config option
Merge pull request #613 from caskdata/feature/update-images

Update imagetypes for Shellshock
Merge pull request #614 from caskdata/feature/allow-pvhvm-images

Remove (unconfigurable) disk_config option
Update README.md
Update README.md
Merge pull request #612 from caskdata/gaarf

NGUI: Templates + Providers
Merge branch 'develop' into feature/ngui-protractor-sauce