Update composer.json
Merge pull request #89 from GrahamCampbell/patch-1

Update composer.json
Use new coverage approach.
Added Coveralls badge.
Fixed PHPCS issues.
Fixed #90: Authoriztioncode v AuthoriztionCode
Merge remote-tracking branch 'upstream/master' into bulk

Conflicts:
	src/Provider/LinkedIn.php
	test/src/Entity/UserTest.php