Log Message:
Update ruby-rspec-rails to 3.3.3.

### 3.3.3 / 2015-07-15
[Full Changelog](http://github.com/rspec/rspec-rails/compare/v3.3.2...v3.3.3)

Bug Fixes:

* Fix issue with generators caused by `Rails.configuration.hidden_namespaces`
  including symbols. (Dan Kohn, #1414)

### 3.3.2 / 2015-06-18
[Full Changelog](http://github.com/rspec/rspec-rails/compare/v3.3.1...v3.3.2)

Bug Fixes:

* Fix regression that caused stubbing abstract ActiveRecord model
  classes to trigger internal errors in rails due the the verifying
  double lifecycle wrongly calling `define_attribute_methods` on the
  abstract AR class. (Jon Rowe, #1396)

### 3.3.1 / 2015-06-14
[Full Changelog](http://github.com/rspec/rspec-rails/compare/v3.3.0...v3.3.1)

Bug Fixes:

* Fix regression that caused stubbing ActiveRecord model classes to
  trigger internal errors in rails. (Myron Marston, Aaron Kromer, #1395)