CMS and LMS - Login via (Facebook, Google)

Hi, we are a group of students from Vietnam

Currently we have successfully installed the LMS and CMS login via OAuth (Facebook, Google)
Link Guide config login OAuth (Facebook, Google): https://github.com/ngocchung75/edx-platform/wiki/Guide-config-login-OAuth-(Facebook,-Google)

I have signed contributor agreement and send email to Jennifer. Please review source change. 

Hopefully our team can contribute to edx-platform code.
Thank you.