Fix issue if Facebook user doesn't have a username
Merge pull request #70 from dwightwatson/master

Fix issue if Facebook user doesn't have a username
Adding in multi-version syntax support for http_build_query
Merge pull request #71 from dragoonis/patch-1

Adding in multi-version syntax support for http_build_query
Grant namespace for verifying instance was improperly referenced
Merge pull request #72 from TomHAnderson/custom-grants

Grant namespace for verifying instance was improperly referenced
psr-4
Fix perms to 644
Added php-cs-fixer to dev and ran it
Setup base unit testing framework
Merge branch 'providers'

* providers:
  Added QQ and weibo to providers
Update README.md
Merge branch 'providers'

* providers:
  Update README.md
100% unit test of Github, Google, Facebook and LinkedIn
Simplified user class; php defaults vars to null so no need to duplicate that
Ran cs fixer & added testing namespace to psr4 + log > logs
Moved tests to test; tidy phpunit.xml
100% unit tests for Vkontakte
100% unit tests for Instagram
100% unit tests for Eventbrite + source fixes