An error occurred while installing coffee-script-source (1.7.0), and Bundler cannot
continue.
Make sure that gem install coffee-script-source -v '1.7.0' succeeds before bundling.
After gem install coffee-script-source -v '1.7.0'
ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
gem install coffee-script-source -v '1.7.0'? - Marek Lipka