Merge pull request #12 from integrii/master

Add support for Centos 6.6 and 6.7
Bump to 0.5.0
Update readme
Update deps
Bump to 0.5.1
Typos
Added abilitiy to not install epel and hop5.in when deploying HHVM on Centos
Updated readme with new attributes
Improve tests
Bump to 0.6.0
Fix deprecations