* Add custom license header style in order to comply with Google's Checkstyle format
* Update license headers to comply with Google's Checkstyle format
* 1) Updated test cases to use Junit Assert method as compared to assert keyword 2) Proper testing of RemoteService using RandomProvider interface. Introduced RandomProvider interface so that randomness can be controlled from test cases. 3) For readability used constant for representing FAILURE
* Addressing review comments, Deleting unintentional file and used FAILURE constant in ClientTest as well