/ Automatic / API-based / Any other form of programmatically joining CI runners to GitLab-CI

As per exiting bugs on Github:

https://github.com/gitlabhq/gitlab-ci/issues/429 https://github.com/gitlabhq/gitlab-ci-runner/issues/93 https://github.com/gitlabhq/gitlab-ci/issues/378

It would be great to be able to easily automate the spinning up and down of runners without having to manually enter the new token from GitLab-CI every time it changes.