add libvorbis codec for ogg Vorbis export when no codec is specified, fixes jiaaro/pydub#34
Merge pull request #35 from jaymzcd/master

add libvorbis codec for ogg Vorbis export when no codec is specified
increment version for ogg vorbis bug fix
Add authors files
Merge remote-tracking branch 'upstream/master'

Conflicts:
	test/test.py