Upgrade peep.py from version 0.8 to 1.1.0

https://pypi.python.org/pypi/peep
Version History

1.1
- Support Python 3.

1.0.2
-Add support for .tar.bz2 archives.

1.0.1
-Fix error (which failed safe) installing packages whose distro names contain underscores. 

1.0
- Add wheel support. Peep will now work fine when pip decides to download a wheel file. 

0.9.1
- Don't crash when trying to report a missing hash on a package that's already installed.

0.9
-Put the operative parts of peep into a single module rather than a package, and make it directly executable.