Convert specs to RSpec 2.14.8 syntax with Transpec

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

* 71 conversions
    from: its(:attr) { }
      to: describe '#attr' do subject { super().attr }; it { } end

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

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

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

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

* 2 conversions
    from: obj.stub(:message).and_return { value }
      to: obj.stub(:message) { value }

* 1 conversion
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)
Merge pull request #3047 from petergoldstein/feature/run_transpec

Convert specs to RSpec 2.14.8 syntax with Transpec