Added user interface and getUniqueIdentifier methods to get user ids or equivalent
Merge branch 'refs/heads/feature-user-details' into user-detail

Conflicts:
	src/Thomaswelton/LaravelOauth/OAuth.php
Added bitly and soundlcloud user implementations
updated method we convert a provider name into the class names
Added fitbit and box user implementations
Added support for Amazon, BitBucket, Dropbox and Paypal
Updated AbstractUserInterface so that each service requires less code to implement the getUID method
PHP-CS-Fixer
Merge branch 'refs/heads/user-detail'
Add scrutinizer configuration