Upgraded to RSpec 3.0.2 and converted the specs to the RSpec 3.0.2 syntax with Transpec.

This conversion is done by Transpec 2.3.1 with the following command:
    transpec

* 7 conversions
    from: it { should ... }
      to: it { is_expected.to ... }

* 3 conversions
    from: describe 'some helper' { }
      to: describe 'some helper', :type => :helper { }

* 2 conversions
    from: be_false
      to: be_falsey

* 2 conversions
    from: be_true
      to: be_truthy

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

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

* 1 conversion
    from: obj.stub(:message).and_return { value }
      to: obj.stub(:message) { value }

For more details: https://github.com/yujinakayama/transpec#supported-conversions