[pbs] Add coding declaration

Python 2.x does not work without it.
2015-07-02 13:13:27 +08:00 · 2015-07-02 13:13:27 +08:00 · 93f9420993
commit 93f9420993
--- a/youtube_dl/extractor/pbs.py
+++ b/youtube_dl/extractor/pbs.py
@ -1,3 +1,4 @@
+# coding: utf-8
 from __future__ import unicode_literals

 import re