Implemented Base class from: https://github.com/jenwachter/phpunit-test-skelaton
Added access_token param to _construct()
Added getUserFeed() method.
Added getUserRecentMedia() method.
Unrequired access token, some documentation
Created addAccessToken() method, which will be called to modify request paramters when the access_token is required.
Fixed documentation that had min/max stuff backwards.
Added getUserRecentLikes().