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Fixing #16

Fixing the #15 issue.

This release fixes invalid package configuration file under Laravel 5.

Change log:

• fixes #12

Change log:

• GuzzleHttp Client is now responsible for API calls
• Added scalar type exceptions for public setters
• Added support for Laravel 5 while maintaining backwards compatibility with Laravel 4
• Changed the config name from config.php to bitly4laravel.php. The main method "get" which existed in v2 is now called "make" and it returns the response in xml/json format instead of returning the class object.
• License change from BSD-2 to MIT

This release brings Laravel 5 support while still keeping backwards compatibility with Laravel 4.

Added possibility to pass options to connection class.

The best release so far, testing on my production site for a month.