I use bundler 0.9.6 with all of my projects. Checkout my earlier post on how to add bundled gems to your project. I am excited about the updated bundler support in Rubymine 2.0.2 for a few reasons.
Rubymine can easily find my bundled gems in my Gemfile and attach gems to my project with suggestions. Now I can Go To Declaration for all of my attached gems.
I don’t have to navigate to my project through the terminal to unlock the Gemfile and add a new gem. I can use the bundler menu for all bundler functions.
I can get feedback from my bundler commands inside the Rubymine run window.