Update RuboCop to 0.23
Simplify RuboCop configuration
Code style
Update to RSpec 2.99
Convert specs to RSpec 2.99.0 syntax with Transpec

This conversion is done by Transpec 2.2.1 with the following command:
    transpec

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

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

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Update deprecated RSpec config option
Update to RSpec 3.0
Remove obsolete RSpec config option
Update CococPods to 0.33
Conform to CocoaPods 0.33
Bump up version to 0.1.0