Merge pull request #6 from mgoggin/master

Added support for RubyGems >= 2.0.0
Add service badges to README.md

Showcase latest gem version, current build status (master branch) and current code complexity (codeclimate).
Correct history file to use proper versions

Version 0.1.0 was mentioned twice with different features.

Update it to reflect the changes of version 0.1.1 instead.
Update History with merge commits

Give credit where credit is due
Prepare for 0.2.0 release

Due changes in support for RubyGems 2.0.x, this deserves a bigger
version bump.

[ci skip]