lock rspec version
Convert specs to RSpec 2.99.0 syntax with Transpec

This conversion is done by Transpec 2.2.2 with the following command:
    transpec

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

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

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

* 6 conversions
    from: < expected
      to: be < expected

* 5 conversions
    from: > expected
      to: be > expected

* 3 conversions
    from: lambda { }.should
      to: expect { }.to

* 3 conversions
    from: lambda { }.should_not
      to: expect { }.not_to

* 2 conversions
    from: collection.should have(n).items
      to: expect(collection.size).to eq(n)

* 2 conversions
    from: it { should_not ... }
      to: it { is_expected.not_to ... }

* 1 conversion
    from: it { should ... }
      to: it { is_expected.to ... }

For more details: https://github.com/yujinakayama/transpec#supported-conversions
update rspec