Changed the unimplemented (but named) tests to fail instead of silently 'succeeding'. The namespace and class name for FftwTransform were changed to be Waveform::Transform::Fftw3_Dft_1d and Waveform::Transform::Fftw3_Dft_1d_Normalized, which should be the template for all of the other transforms provided alongside fftw3. Updated the README slightly in order to keep with the new interfaces and names. Shortly the transforms will switch to parameterized test functions to reduce repeated boilerplate code. Lastly, work is being done on design regarding non-linear transforms and how they affect Waveform's operators.