Add a link near Github commit message with #issue_id to a Redmine story link.
In Github, all your commits with "#issue_id" in the message will have a link to your Redmine story.
Don't forget to configure your Redmine URL in the extension settings
ex: http://redmine.example.com/issues/
Feel free to contribute, the source code is on Github https://github.com/T1l3/Redmine-Linker