Must use binary mode with bytestrings, or unicode with text mode for io

Fixes https://github.com/SickRage/sickrage-issues/issues/191

sickbeard/metadata/tivo.py

@@ -321,7 +321,7 @@ class TIVOMetadata(generic.GenericMetadata):
 
             logger.log(u"Writing episode nfo file to " + nfo_file_path, logger.DEBUG)
 
-            with io.open(nfo_file_path, 'w') as nfo_file:
+            with io.open(nfo_file_path, 'wb') as nfo_file:
                 # Calling encode directly, b/c often descriptions have wonky characters.
                 nfo_file.write(data.encode("utf-8"))