Added support for Go's repository retrieval.
Created by: brunoga
- Simply adds the relevant meta link in the project's show action.
- Information about this meta tag can be found here: http://golang.org/cmd/go/#hdr-Remote_import_paths
Note I am not sure how to do unit tests for this, but I am willing to do those if someone can point me to how to do it. Also I did not update the CHANGELOG as I am not sure where to put the change. Is it under v6.5.0?