Add setup.py for Pypi.

Add package soundcloud-syncer in Pypi repository.
Add Pypi installation instruction in README.org.
Rename old script ~sync.py~ => ~sc-syncer~.
Update gitignore.

Ignore build, dist and MANIFEST directories/file generated when building
package for Pypi.
Add python version 3.3 for travis builds.
Merge branch 'master' of github.com:Sliim/soundcloud-syncer

Conflicts:
	README.org