Remove localhost from port mapping

In the light of https://github.com/sameersbn/docker-gitlab/issues/84 I propose removeing `127.0.0.1` when firing up the docker container.
Merge pull request #85 from jk/patch-1

Remove localhost from port mapping
README: fix GITLAB_PORT and GITLAB_EMAIL documentation
upgrade to gitlab v.7.0.0-rc1
nginx: base the ssl nginx configs on gitlab-ssl config
upgrade to gitlab-7.0.0
Merge branch 'feature/gitlab-7.0.0'
release-7.0.0
removed --local flag from bundle install

bundle automatically uses the cache when available