Fixes the feedback method to read the correct number of bytes and to do it from the correct socket
- Pack formating for 3rd APNS binary format (command: 2) with support for iOS7 features

- Document wire frame format

- Add specs

- Update gemspec
Add support for 3rd gen APNS wire format
remove non required dependency
ensure that there is a priority to be encoded
test specs against new gem version
fix typo availible != available
Merge pull request #18 from toto/master

Support for 3rd gen APNS wire format