Moving requirements into a separate file
Scaffolding in testing architecture
Adding a tests-specific app

Includes:
* Models + fixture data
* Settings
* Media used in fixture
Adding first-pass at tests

Includes testing:
* Setting PPOI
* PPOI Validation
* Resized paths
* Filtered paths
* Caching integration
* create_on_demand setting and functionality
* image warming
Swapping out point-releases in travis config
Attempting to squash Travis error around settings.configure()
Attempting to squash Travis DJANGO_SETTINGS_MODULE unset error
Catching ImportError for django < 1.7
Setting 'upload_to' properly for django < 1.7
Updating runtest.py to be django < 1.7 compatible
Removing unused imports
Adding Travis CI badge to docs

Includes:
* Updating PyPI badges to be .svg
Adding coveralls integration
Adding Travis CI and coveralls badges to README

Includes:
* Updating existing PyPI badges to .svg
Changing Travis script directive to coverage
Adding djangorestframework>=3 support to VersatileImageFieldSerializer
DRY pass on tests
Adding VersatileImageFieldSerializer tests
Adding djangorestframework versions to travis env config
Adding VersatileImagePPOIClickWidget tests