Updated setup.py

Fix "$query" KeyError when using PyMongo 2.2+

This appeared to be happening in the case where there were no PyMongo queries
and an empty dictionary was returned.  Using dict.get fixes this problem, and
is backwards compatible with PyMongo < 2.2.

Fixes #13

The template files and templatetags dir should now
be included as expected. I also added tox to test
the setup.py and versiontools to pull the version
from the init.

Workaround for inspect.stack() failing when jinja2 templates are on the stack

Fixes small issue with the monkey patching of the insert function

Added error message that is displayed when stack can not be retrieved because of IndexError in inspect.stack()

Added a try except clause around inspect.stack() call, since python's inspect sometimes fail when jinja2 templates are on the stack

Typo in _remove - tries to insert !

Bump to 0.1.2 otherwise wont update friend

Setup.py fixes from @gehan

Fix setup.py to include templates and templatetags

Allow safe,multi and upsert to be passed through