Link to runner code from readme.

README.md

@@ -57,7 +57,7 @@ __GitLab CI__ is a web application with an API that stores its state in a databs
 It manages projects/builds and provides a nice user interface.
 It uses the GitLab application API to authenticate users.
-__GitLab CI Runner__ is a pure ruby application which processes builds.
+[GitLab CI Runner](https://github.com/gitlabhq/gitlab-ci-runner) is a pure ruby application which processes builds.
 It can be deployed separately and works with GitLab CI through an API.
 In order to run tests you need at least 1 __GitLab CI__ instance and 1 __GitLab CI Runner__.