edx/edx-platform — pull request #3970 by lamagnifica (2014-06-03 16:36:48+00:00)
Title: Ahodges/documentation/doc502

@sarina please review for accuracy and completeness.
@rocha , if you'd like a member of the Analytics team to look this over please tag him.
@WatsonEmily , PM review.
@mhoeber , @srpearce please copy edit and proofread.