Added basic Accept-Language HTTP header parsing handler
Fixed some typos
Merged with recent gzip handler
Updated to fix pull request issues.

* Renamed public ACCEPT_LANGUAGE_HEADER constant
* Added package-specific README.md
* Added package level documentation and example
* Refined/completed comments for various functions
Merged with latest upstream
Updated README
Fixed README
Updated README to conform with layout of other packages
Merge pull request #8 from tmbrggmn/acceptlang

Accept-Language HTTP header parsing handler