initial commit of Pinboard
add working pinboard provider
fix output formatting for xml (not array)
fix data cast for cache compatibility
fix key name for text link
work on testing
add handling for AuthCredentials.php without twitter creds
add sample data for pinboard unit tests
finish unit tests for Pinboard service
Merged branch 'addpinboard' of git://github.com/vicgarcia/The-Simple-LifeStream into pinboard
Thanks to Vicgarcia <https://github.com/vicgarcia> for creating a pinboard
Provider!

I did minor modifications to the TestServicePinboard
- AuthCredentials.php was updated before. It now looks something like:
   <?php
    return array(
        'twitter' => array(
            'consumer_key'    => 'xxx',
            'consumer_secret' => 'xxx',
            'access_token' => 'xxx',
            'access_token_secret' => 'xxx'
        ),
        'instagram' => 'xxxx',
        'pinboard_token' => 'xxxxx',
    );
   ?>
- Added more Execution time to the Test.
Added feature to apply callback functions to the providers response
Thanks to QWp6t <https://github.com/QWp6t> for suggesting that feature
- Version Bump to 4.7.0
- Minor formatting changes (trying to update the classes and follow PSR-1/2)
- Added missing docblock to the `filterResponse` method
- Added Tests to the providers
- Updated the README.md
- Issue/Feature Request #5 closed!