Upgrade to rspec 2.99
Convert specs to RSpec 2.99.1 syntax with Transpec

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

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

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

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Upgrade to rspec 3
Convert specs to RSpec 3.0.3 syntax with Transpec

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

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

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Upgrade .rspec and spec_helper to v3 standard files.
Cleanup style and warning issues after transpec update
Upgrade Travis for newer rubies.
Set required Ruby version in gemspec
Changed README badges to .svg
Merge pull request #4 from Fryguy/upgrade_rspec_travis_et_al

Upgrade rspec travis et al