Upgrade to RSPEC 3.0
Convert specs to RSpec 3.1.4 syntax with Transpec

This conversion is done by Transpec 2.3.7 with the following command:
    transpec -f

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

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

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

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

* 11 conversions
    from: describe 'some model' { }
      to: describe 'some model', :type => :model { }

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

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

* 4 conversions
    from: Klass.any_instance.stub(:message)
      to: allow_any_instance_of(Klass).to receive(:message)

* 3 conversions
    from: describe 'some feature' { }
      to: describe 'some feature', :type => :feature { }

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

* 2 conversions
    from: describe 'some request' { }
      to: describe 'some request', :type => :request { }

* 2 conversions
    from: obj.stub(:message => value)
      to: allow(obj).to receive_messages(:message => value)

* 1 conversion
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)

* 1 conversion
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

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