Merge pull request #47 from radify/changelog-update

Updates CHANGELOG for 0.6.0 release

Merge pull request #39 from radify/codeclimate-fix

Codeclimate Fix

Merge pull request #24 from radify/101299266-adds-contributing.md

Adds CONTRIBUTING.md

Bump version to 0.4

Install karma globally when running tests.

Version 0.2.