CDK-519: Updated travis configuration to Oracle JDK7.
Merge pull request #149 from joey/cdk-519-travis-to-jdk7

CDK-519: Updated travis configuration to Oracle JDK7.
CDK-473: Report illegal CSV header characters early

Closes #151
CDK-550. Kite does not compile against Hive 0.13.0
CDK-473: Moved header check to a util method in Compatibility

Closes #151