add a few more helpers for virtualenv

plugins/available/virtualenv.plugin.bash

@@ -8,3 +8,12 @@ function mkvenv {
   cwd=`basename \`pwd\``
   mkvirtualenv --no-site-packages --distribute $cwd
 }
+
+# create a new virtualenv for the branch you're currently in
+function mkvbranch {
+  mkvirtualenv --no-site-packages --distribute "$(basename `pwd`)@$(git_prompt_info)"
+}
+
+function wovbranch {
+  workon "$(basename `pwd`)@$(git_prompt_info)"
+}