During the initial development of Forem, we asked people to point to Forem in their Gemfile like this:

gem 'forem', :github => "radar/forem"

As of this writing, Forem's current development and all installations of Forem are using either the rails4, rails3 or master branches of the repository. There is probably going to be a point where this is no longer A Good Idea. This point is rapidly approaching.

To fix this little issue, we will tag a 1.0 release... eventually.