Fix PATH issues in ZSH
Fix PATH issues in ZSH

El Capitan has broken the PATH in ZSH, more info here:

http://www.zsh.org/mla/users/2015/msg00725.html

bradleywright/my-boxen,bradleywright/my-boxen,bradleywright/my-boxen,bradwright/my-boxen,bradwright/my-boxen,bradwright/my-boxen