Hotfix: Add comment to Gemfile explaining how to release new versions
Hotfix: Add comment to Gemfile explaining how to release new versions

This updates the Gemfile to add a comment explaining how to release
much-plugin. Since we use `ggem` to release new gem versions and
much-plugin is a dependency of `ggem` the normal process doesn't
work. This is because `ggem` will load the installed version of
much-plugin instead of loading the much-plugin files. To fix this,
we need to run: `bundle exec ggem` so bundler will make it require
the much-plugin files instead of the installed version. To do this,
`ggem` has to be added to the gemfile. Also since adding ggem to
the gemfile will mean there is an uncommited file, the `-f` flag
has to be used to force releasing the gem. So this adds a commented
out `ggem` to the gemfile and adds a comment explaining to do a
forced release.

redding/much-plugin