[How To] Gogs on FreeNAS

I migrated from GitLab to Gogs for a few reasons:

1. I didn't need all the features. Issue tracking, Wiki, etc.
2. Gitlab is a mess to install/maintain.

https://github.com/jed-frey/FreeNAS-Gitea/tree/gogs

More or less: http://gogs.io/docs/installation/install_from_source.html