Reorganize sections in the README.
Reorganize sections in the README.

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