Merge pull request #39 from craigbruce/master

Updated HubSpot tracking code. Updated test/docs/changelog to reflect th...
Bump version to 0.18.0 and credit Craig Bruce
Add Django dependency in setup.py
Ignore PyCharm and Geany IDE project files
Added Piwik open source web analytics
Added tests for Piwik
Merge pull request #40 from bittner/master

Added Piwik open source web analytics
Small fixes after Piwik merge

- Update changelog and add Peter Bittner to authors
- Fix documentation typo
- Bump version
Fixed grammar in Piwik documentation
Merge pull request #41 from bittner/master

Fixed grammar in Piwik documentation
added py2.6/2.7 classifiers as travis-ci tests these versions
minor pep8 fix
added default middleware for django 1.7
fixed various typos, this would of failed previously
incorrect variable names/syntax (this should not of worked)
added Django 1.7 to tox and travis
removed custom override_settings, using django instead. Removed with/without app decorators as only use in a few places. Updated all tests to use django provided override_settings.