Pivotal Tracker

To link Pivotal tracker and Github use this link. The process is straight-forward if you are the owner of the repository. Otherwise the owner will have to go through the process of adding the service under Integrations & Services in the repository's settings.

This integration will necessitate you to shift to a custom format of commit messages so that you can start tagging your commits to Tracker stories. As described it will be in this format:

[(Finishes|Fixes|Delivers) #TRACKER_STORY_ID]