Convert specs to RSpec 3.0.0.beta2 syntax with Transpec

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

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

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

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

* 2 conversions
    from: lambda { }.should
      to: expect { }.to
Bump RSpec to 3.1
Merge pull request #22 from doomspork/rspec

Update RSpec to 3.1 and expect syntax