v0.5: faster, with wider samples support

This release uses scikits.audiolab package to convert WAV files of
various formats to 32bit pcm which can be used by SunVox
Create source and docs folders
Update README, add RST version and CHANGES.txt
Ignore package-related files
Package MANIFEST file
Create README linking README.rst
Create setup script
Update gitignore
Switch from distutils to setuptools
Update READMEs
Add README files to the manifest
Add pip section to the installation instructions
Merge branch 'master' of https://github.com/ckald/Samplicity

Conflicts:
	samplicity.py