Update CHANGELOG.md
Update CHANGELOG.md
Update version.sbt
Merge pull request #56 from paypal/release/0.2.0

Release/0.2.0
Merge branch 'master' into develop
Setting version to 0.2.0
Changelog updated for 0.2.0
README.md updated to 0.2.0
Setting version to 0.2.1-SNAPSHOT