pip v1.1 removed direct virtualenv support (-E).  Instead, run the pip binary inside the virtualenv. Fixes COOK-1046.
pip v1.1 removed direct virtualenv support (-E).  Instead, run the pip binary inside the virtualenv. Fixes COOK-1046.

beni55/cookbooks,beni55/cookbooks,beni55/cookbooks,beni55/cookbooks,beni55/cookbooks,beni55/cookbooks