Make compatible with Django Dev (1.7+)

[gciding]

get_path_info was moved from django.core.handlers.base to django.core.handlers.wsgi in commit 636860f. See https://github.com/django/django/commit/636860f

Here is a sample patch that illustrates the move, suggests a backwards compatible change. It may not be the cleanest way to do this, but it illustrates the change required.

[rca]

Awesome, this helped, thanks!

[kennethreitz]

:sparkles: :cake: :sparkles:

[pydanny]

Normally, I'm not keen on accepting stuff like this so early. It's a try/except statement on code that's at least 5 months away from being finalized. That's the optimistic deadline, and it will probably be more like 7-8 months. Fortunately, this is something that the framework is heading to.

[kennethreitz]

It's really not a big deal.