Convert specs to RSpec 2.14.7 syntax with Transpec

This conversion is done by Transpec 1.7.0 with the following command:
    transpec

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

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

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

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

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

* 3 conversions
    from: obj.stub(:message => value)
      to: allow(obj).to receive(:message).and_return(value)

* 1 conversion
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)
Fix up block to and_return.

This was not automatically converted by transpec.
Disable should syntax.
Simpler solution to passing a block and returning a value.

Thanks to Yuji Nakayama for this.
Merge pull request #13 from square/jkingdon/transpec

transpec