- update README.rst;
- update lib versions in requirements.txt;

get_local_file_for_url() should compare path_line with tempdir, url will never
match tempdir.

also ensure it is valid for linux.

it needs the m3u8 media playlist url in order to do proper rewriting.

include utils/versionutils.py and requirements.txt in MANIFEST.in

use action=version for --version support, this allow me to make -o and
URL required params.