Update structure of the package for PyPI
Make use of README.md only
PyPI-compliant structure continued
Update PyPI version to 0.1a6
Fix MANIFEST.in (README.md inclusion instead of .rst one)
NumPy is part of SciPy
Move numpy deps back, fix MANIFEST (rm docs), update version
Remove useless recursive-include in MANIFEST.in
Spectrogram script: use argparse instead of optparse
Prepare infrastructure for the unit tests
Merge branch 'master' of https://github.com/bioidiap/ssp

i.e., Import Laurent's mods for PyPI
Correct the previous merge & update setup.py

plot.py needed moving.