prepare for rspec 3
Convert specs to RSpec 2.99.2 syntax with Transpec

This conversion is done by Transpec 2.3.7 with the following command:
    transpec

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

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

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

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

* 4 conversions
    from: mock('something')
      to: double('something')

* 2 conversions
    from: be_true
      to: be_truthy

For more details: https://github.com/yujinakayama/transpec#supported-conversions
build local gem for rails 4.1.6