sampsyo/beets — pull request #73 by jhawthorn (2013-01-21 20:51:48+00:00)
Title: fix RewritePlugin initialization

enabling the rewrite plugin causes an error on init

```
$ beet
Traceback (most recent call last):
File "/home/jhawthorn/code/beets/beet", line 20, in
beets.ui.main()
File "/home/jhawthorn/code/beets/beets/ui/__init__.py", line 725, in main
_raw_main(args)
File "/home/jhawthorn/code/beets/beets/ui/__init__.py", line 666, in _raw_main
plugins.send("pluginload")
File "/home/jhawthorn/code/beets/beets/plugins.py", line 309, in send
handlers = event_handlers()[event]
File "/home/jhawthorn/code/beets/beets/plugins.py", line 295, in event_handlers
for plugin in find_plugins():
File "/home/jhawthorn/code/beets/beets/plugins.py", line 193, in find_plugins
_instances[cls] = cls()
File "/home/jhawthorn/code/beets/beetsplug/rewrite.py", line 49, in __init__
self.config.add({})
AttributeError: 'RewritePlugin' object has no attribute 'config'
```