Clarify training procedure.
Clarify training procedure.

Summary of content from @Strateus and @melgor at
https://groups.google.com/forum/#!topic/cmu-openface/XgxfN8Xy9nA

nmabhi/Webface,nmabhi/Webface,nhzandi/openface,cmusatyalab/openface,cmusatyalab/openface,Alexx-G/openface,francisleunggie/openface,xinfang/face-recognize,nhzandi/openface,francisleunggie/openface,nmabhi/Webface,nmabhi/Webface,nhzandi/openface,xinfang/face-recognize,francisleunggie/openface,xinfang/face-recognize,Alexx-G/openface,Alexx-G/openface,Alexx-G/openface,cmusatyalab/openface