Merge pull request #8 from brions/master

adding one forgotten state - 'stopped'
[maven-release-plugin] prepare release WePay-Java-SDK-2.0.7
[maven-release-plugin] prepare for next development iteration
Update README.md
Merge pull request #9 from brions/master

Added more robust response handling in DataProviderImpl
[maven-release-plugin] prepare release WePay-Java-SDK-2.0.8
[maven-release-plugin] prepare for next development iteration
Update README.md