Use transpec
Convert specs to RSpec 2.99.2 syntax with Transpec

This conversion is done by Transpec 2.3.6 with the following command:
    transpec

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

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

* 3 conversions
    from: be_false
      to: be_falsey

* 3 conversions
    from: be_true
      to: be_truthy

* 1 conversion
    from: RSpec.configure { |c| c.color_enabled = something }
      to: RSpec.configure { |c| c.color = something }

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Fix guard setting
Use RSpec 3.0
Merge pull request #18 from katsuma/upgrade_rspec3.0

Upgrade rspec3.0