Use bin folder for Rails4.
Syntax highlight in README.md
Add rbenv files to gitignore.
Update simplecov to 0.9.0
Update specs and dependencies for RSpec 3.
Monkey patch stub_authorization!

This so all specs may pass. Pull request exists for this:
https://github.com/spree/spree/pull/5182
Bypass install template override on Travis.
Merge pull request #214 from futhr/rspec3

RSpec 3 updates.