Add support for 1D DWT

[fbcotter]

As requested in #6

[MushroomHunting]

Hi Fergal,

Thanks so much for this library! I was just wondering if there has been any development on the 1D transform as I am interested in experimenting with the WT for audio analysis and the pywt based solution I have is quite slow - particularly for processing larger numbers of signals

cheers

[CDitzel]

I think it is rather simple since the 1D transform is already included within the 2D transform

[LittleFlyingSheep]

Excuse me, I have seen the answer about #6, but still have problem to use your code to achieve DWT for a 1-D audio signal. Would you please show a example about 1-D audio signal? Thank you very much for your work.

[fbcotter]

@LittleFlyingSheep master now has support for 1d transforms. see the readme for an example