added one more way to install via pip. fixes #81
added one more way to install via pip. fixes #81

jamesblunt/nodeenv,simudream/nodeenv,asottile/nodeenv,twmt/nodeenv,Milstein/nodeenv,jhermann/nodeenv,chriskuehl/nodeenv,simudream/nodeenv,asottile/nodeenv,jamesblunt/nodeenv,Milstein/nodeenv,chriskuehl/nodeenv,twmt/nodeenv