fix for issue #29 add basic authentication
Update pysolr.py

I'm getting an error on line 306... self.auth hasn't been defined.
Merge pull request #1 from dankingston/patch-1

Update pysolr.py
Merge branch 'master' of git://github.com/bettlebrox/pysolr into bettlebrox-master

Conflicts:
	pysolr.py
resolve changes from merge
Merge branch 'bettlebrox-master'