Convert specs to RSpec 3.1.7 syntax with Transpec

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

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

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

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

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

* 18 conversions
    from: obj.stub_chain(:message1, :message2)
      to: allow(obj).to receive_message_chain(:message1, :message2)

* 10 conversions
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

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

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

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

* 4 conversions
    from: describe 'some controller' { }
      to: describe 'some controller', :type => :controller { }

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

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

* 1 conversion
    from: describe 'some helper' { }
      to: describe 'some helper', :type => :helper { }

* 1 conversion
    from: describe 'some mailer' { }
      to: describe 'some mailer', :type => :mailer { }

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