Add small explanation for installing with zsh package managers
Diff
1diff --git a/README.md b/README.md
2index 5a6604b05dadc5afcb6a7cb57a877220ee476ce3..2bc0f546e4b0d38a51a4b5773347de1ec9d7ba2a 100644
3--- a/README.md
4+++ b/README.md
5@@ -37,6 +37,7 @@ Mac OSX users can install `virtualenvwrapper` with brew:
6 7 Installing with ZSH Package Managers
8 -------------------------------------
9+Add one of the following lines to your `.zshrc` file depending on the package manager you are using:
1011 #### [ZPlug](https://github.com/zplug/zplug)
12 ```