Moved Wav code and Added Stubbed Scaffolding

Moved any code dealing with WAV files to the JWav Class file. Added
validation function stubs, removed unnecessary code, added the JWav
function calls that will be doing all of the WAV processing. Simplified
code greatly.
Added Wav Processing and Validation Code

Moved the WAV code into the JWav Class that was previously in the
Audio_Steganography_Driver Class. Added validation function stubs.