Update gitconfig user
Merge pull request #49 from atomaka/bugfix-git_user

Update gitconfig user
Accept new parameters for controlling gitlab and nginx config
Update gitlab.yml template
Update gitlab-shell config file
Update nginx template to use new SSL params
Update README with new settings
Merge pull request #48 from atomaka/feature-config_settings

Manage More GitLab Settings Through Parameters
[doc] update params readme
Make it work with RVM