Created the 1D FFT lab and added it to vol2 imports.
Continued editing fft labs and added some necessary files including plot creation file.
Merge branch 'fft' of https://github.com/jhendr/numerical_computing into fft
Made some edits to fft labs and plot function.  Added some necessary files.
Split the FFT lab into Alg. lab and App. lab.  Made a few other small changes and added the second lab to Vol2.tex.
Merge branch 'develop' into fft
Small changes to fft labs and plot files.
Added image and wav files.
Added image and .wav files for filter and convolution lab.
Changed some plots.
Merge branch 'develop' into fft
Merge pull request #209 from jhendr/fft

FFT