Update README with latest apps feature from Sven.
Fix response codes for addresses not present in ips.

Also update the logic to use implicit boolean evaluation, invert the expression, and raise the HTTPError.
Merge pull request #85 from normanr/readme

Update README with latest apps feature from Sven.
Merge pull request #86 from normanr/unauthorized

Fix response codes for addresses not present in ips.
Bump version