finish work on virtualenv section in dev docs
finish work on virtualenv section in dev docs

Dallinger/Dallinger,jcpeterson/Dallinger,Dallinger/Dallinger,Dallinger/Dallinger,jcpeterson/Dallinger,Dallinger/Dallinger,jcpeterson/Dallinger,jcpeterson/Dallinger,jcpeterson/Dallinger,Dallinger/Dallinger