Convert specs to RSpec 2.14.7 syntax with Transpec

This conversion is done by Transpec 2.2.0 with the following command:
    transpec

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

* 1 conversion
    from: == expected
      to: eq(expected)

See also: https://github.com/yujinakayama/transpec#supported-conversions
Updated to RSpec 3