Packaged source code properly (reverse Chikka-URL).
Further directory refactoring. Adding test skeleton.
Adding .gitignore.
Test set-up now okay. Now we need actual tests.

Added libraries needed for JUnit to run. Added test script: single invocation
to compile and to run test.
Fleshed out a test. But then it is still failing due to PKCS discrepancy.
Indicating PKCS8 format in tests.
Adding passing unit tests.

Included is a sample private key for testing in DER PKCS8 format. Also included
is the expected base 64 encoded signed message. The filenames in the unit test
is relative to the classes_test directory expected by the test run/build script.
Merge branch 'master' of https://github.com/chikkaconnectivity/csg_rsa_sig_gen-java