scaffold.Interpreter spec tests
Merge branch 'master' into unittests
Merge remote-tracking branch 'jnievelt/unittests' into unittests
Updated Interpreter unit tests to use TestActorRef.  Updated to create a new instance of an interpreter for every test. Modified the language a bit for easier reading.  Added in placeholder for System.exit test.
Updated and merged Joe's changes (@jnievelt) for console testing
Merge pull request #94 from kamiro/unittests

Updated Interpreter Unit Tests