Added blank test files.
Created function to return time slice zip

Return a zipped list of tuples to slice a series of data
into equal times with the exception of the last slice which
ends at the number of samples.
Merge branch 'feature/time_slice' into develop
Bumped revision to 0.1
Merge branch 'release/v0.1'
Merge branch 'release/v0.1' into develop
Improved comments
Updated comments and fomatting.
Made PEP8 compliant.
Added the plot_spectrogram and calc_peak_hold
Added plotting the peak_hold of an STFT.
Merge branch 'feature/addplotting' into develop
Fixes #2, Fixes #3
Fixes #1
Converted FIXME and TODOs into Github issues.
Updated README
Updated README
Fixed plot_spectrogram.
Made PEP8 compliant.
Modified plotting.