No worries. In this example I will be working with the "marc (0.3.0)" gem.
- Edit the environment.rb file and under the "Rails::Initializer.run do |config|" put the following line: config.gem 'marc'
- Next "rake gems:unpack GEM=marc" where GEM=gem_name - don't worry about the version number.
Troubleshooting. If this doesn't quite work, you might want to try:
- Create the gems directory under vendor yourself
- It may complain that it lacks the specification file. If so go to the vendor/gems/gem_name directory and run: gem specification gem_name > .specification