[Issue 46] Created first test covering a few of the error location. Started with the code location report within the test itself..

https://github.com/MutabilityDetector/MutabilityDetector/issues/46
[Issue 46] Added more tests.

https://github.com/MutabilityDetector/MutabilityDetector/issues/46
[Issue 46] Started MutableTypeToFieldChecker audit

https://github.com/MutabilityDetector/MutabilityDetector/issues/46