100% unit tests for Vkontakte
100% unit tests for Instagram
100% unit tests for Eventbrite + source fixes
working on ms
100% unit tests for Vkontakte, Instagram, Eventbrite, Microsoft
Corrected magic getters and setters, removed unused iterator and provide fluent interface:
Added missing RefreshToken
Merge branch 'master' into psr-4

Conflicts:
	src/Provider/Microsoft.php
	test/src/Provider/MicrosoftTest.php
100% code coverage