Refactor conditional Rails loading
Repair the Heroku rake task
Stop bundle executing every Rails test command
Ditch foo.should_receive for expect(foo).to(receive)
Move the rake gem development dependency to the gemspec
Beef up testing and include Rails 4.1
Don't set the gemspec require path since it's just the default
No more Cucumber features
Update Bundler before running the suite on Travis
Run tests in random order
Start to convert the heroku Rake task to a heroku:set Thor task

Pending tests.

[ci skip]
Add the thor gem dependency

Rails 3 depends on Thor ~> 0.14.0 which requires Thor's "option" method
to be replaced with the older "method_option" alternative.
Remove Rails-specific Rake tasks
Remove the runtime dependency on Bundler
Don't depend on ActiveSupport::StringInquirer in the tests
Reconfigure Travis to build only master and to use Bundler
Change the hard-coded Figaro ENV variable prefix

This will help avoid collisions with global Figaro configurations like
FIGARO_PATH, etc.
Fix typo
Merge pull request #111 from shlensky/patch-1

Fix typo
Attempt to properly set Heroku ENV on Windows