Upgrade rspec to 2.99
Convert specs to RSpec 2.99.2 syntax with Transpec

This conversion is done by Transpec 2.3.8 with the following command:
    transpec

* 867 conversions
    from: obj.should
      to: expect(obj).to

* 372 conversions
    from: == expected
      to: eq(expected)

* 221 conversions
    from: obj.should_not
      to: expect(obj).not_to

* 21 conversions
    from: describe 'some model' { }
      to: describe 'some model', :type => :model { }

* 18 conversions
    from: describe 'some request' { }
      to: describe 'some request', :type => :request { }

* 14 conversions
    from: > expected
      to: be > expected

* 13 conversions
    from: < expected
      to: be < expected

* 10 conversions
    from: describe 'some controller' { }
      to: describe 'some controller', :type => :controller { }

* 9 conversions
    from: obj.should have(n).error_on(...)
      to: expect(obj.error_on(...).size).to eq(n)

* 8 conversions
    from: collection.should have(n).items
      to: expect(collection.size).to eq(n)

* 7 conversions
    from: obj.stub(:message)
      to: allow(obj).to receive(:message)

* 6 conversions
    from: be_true
      to: be_truthy

* 5 conversions
    from: lambda { }.should
      to: expect { }.to

* 5 conversions
    from: obj.should_receive(:message)
      to: expect(obj).to receive(:message)

* 4 conversions
    from: be_false
      to: be_falsey

* 4 conversions
    from: obj.should have(n).errors_on(...)
      to: expect(obj.errors_on(...).size).to eq(n)

* 1 conversion
    from: describe 'some helper' { }
      to: describe 'some helper', :type => :helper { }

* 1 conversion
    from: describe 'some mailer' { }
      to: describe 'some mailer', :type => :mailer { }

* 1 conversion
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

* 1 conversion
    from: obj.stub!(:message)
      to: allow(obj).to receive(:message)

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Upgrade rspec to 3.1.0
Convert specs to RSpec 3.1.7 syntax with Transpec

This conversion is done by Transpec 2.3.8 with the following command:
    transpec

* 5 conversions
    from: obj.stub(:message => value)
      to: allow(obj).to receive_messages(:message => value)

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Upgrade capybara to 2.2.0 and add selenium-webdriver
Enable Capybara DSL in specs
Upgrade capybara to 2.4.0
mock_model extracted to rspec-activemodel-mocks
Fix condition
Upgrade database_cleaner to 1.3.0
Switch Selenium to Poltergeist for headless testing
Switch to CanCanCan, fix tests
Update Changelog.md
Fix tests
Correct syntax
Update Changelog.md
Add notes on PhantomJS
Change old "should" syntax
Upgrade factory_girl_rails to 4.5.0
Update Gemfile