Prepare 0.0.2 release

* Fix parsing of `WHITELIST` environment variable
* Upgrade to Express >=3
* Rename and move files
* Add tests
fix express deprecation warnings
try to get tests passing in node 0.6 and 0.8
eliminate nock, get tests passing in 0.6
set mime min version
add small server to serve image with complex content type, as node 0.10 timesout if body is not an image
add missing test fixture
bump version
make tests faster
handle local redirects
update changelog [ci skip]