composer support
Merge pull request #1 from bizonix/master

Composer support
Tiny extra comma was unappreciated by packagist
License for composer file
Add install instructions for composer
Move the call back to after the next request is fired off.
Add the ability to clear completed requests and clean them up for memory efficiency. Als, adds some helper functions for counting queues
These two things did get added, nice!
Add Delete and Put methods