Initial commit
Update README.md
Update README.md
Update README.md
My current state of GitLab SLS.
Clean up, set useful things via pillars, add comments and sources for files
With those changes it works on Debian.

Sorry, many changes and not in individual commits, but among them:
- use system ruby instead of RVM
- change order of postgres states, makes them work on a fresh system
- change of ordering and requirements of ruby states and gitlab install
  commands
- beginning of support for CentOS, doesn't work yet
Merge github.com:viq/gitlab-formula