hey guys i have no idea will it works on moto e , but it works in moto g so i am posting the link to it here
http://xdaforums.com/android/apps-games/app-mod-guide-enable-ok-google-kitkat-t2800878
http://xdaforums.com/android/apps-games/app-mod-guide-enable-ok-google-kitkat-t2800878