Convert specs to RSpec 2.14.8 syntax with Transpec

This conversion is done by Transpec 1.10.4 with the following command:
    transpec

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

* 1 conversion
    from: obj.should
      to: expect(obj).to
Merge pull request #109 from petergoldstein/feature/run_transpec

Convert specs to RSpec 2.14.8 syntax with Transpec