Just install - [Contact Vibrate][1]

From the description:

> Set a different vibration for each of your contacts and know who is it.  

> *Set a different a vibration for each of your contacts*  

>Know who is calling or texting you, just feeling it !  
When you receive a phone call or a text message (SMS or MMS) Contact Vibrate will respond vibrating differently for every contact you have defined. If this particular number or contact has no vibration set a master vibration will be called by default.


  [1]: https://play.google.com/store/apps/details?id=ac.vibration