using (now fixed) virtualenvwrapper omz plugin

zshrc

@@ -21,6 +21,12 @@ export ZSH_CUSTOM=$HOME/.zsh/custom
 # Example format: plugins=(rails git textmate ruby lighthouse)
 plugins=(extract git github svn ruby rails3 bundler rvm heroku pip django osx brew deb ssh-agent npm drush vagrant knife)
 
+# Python/ virtualenv
+if [ -f /usr/local/bin/virtualenvwrapper.sh ]; then
+    export WORKON_HOME=$HOME/.virtualenvs
+    plugins=($plugins virtualenvwrapper)
+fi
+
 # OH MY ZSH!
 source $ZSH/oh-my-zsh.sh
 
@@ -30,12 +36,6 @@ if [ -f "$HOME/.rvm/scripts/rvm" ]; then
   rvm 1.9.3
 fi
 
-# Python/ virtualenv
-if [ -f /usr/local/bin/virtualenvwrapper.sh ]; then
-    export WORKON_HOME=$HOME/.virtualenvs
-    source /usr/local/bin/virtualenvwrapper.sh
-fi
-
 # Node / nvm
 if [ -f "$HOME/.nvm/nvm.sh" ]; then
   source "$HOME/.nvm/nvm.sh"