pep8 fails under TM2

[fonnesbeck]

The pep8 tmbundle fails as follows on TM2:

Traceback (most recent call last):
  File "PEP8", line 11, in <module>
    import textmate_pep8
  File "/Users/fonnescj/Library/Application Support/Avian/Pristine Copy/Bundles/Python PEP8.tmbundle/Support/textmate_pep8.py", line 71, in <module>
    from Vendor import pep8
ImportError: No module named Vendor

[njvack]

The pull request attached to Issue 7 should fix this.