how to add a logo to header -bar in ionic

I am trying to add a logo in the center of my header bar using Ionic. Any advise on how to do it?

Here is my code

<ion-nav-bar class="bar-light">
<!--Logo-->
<ion-nav-buttons >
<img class="title" src="https://s3-us-west 2.amazonaws.com/s.cdpn.io/139144/sp_symbol_option2_1.png">
</ion-nav-buttons>
<ion-nav-buttons side="left">
<!--Left icons-->
<button class="button button-icon button-clear ion-navicon" ng-click="toggleLeft()"> 
</button></ion-nav-bar>

How about doing something like this:

<ion-header-bar align-title="center" class="bar-positive">
  <div class="buttons">
    <button class="button" ng-click="doSomething()">Left Button</button>
  </div>
  <h1 class="title"><img class="title-image" src="http://www.ionicframework.com/img/ionic-logo-white.svg" width="123" height="43" /></h1>
  <div class="buttons">
    <button class="button">Right Button</button>
  </div>
</ion-header-bar>

You can have a look at this plunker as well.

Some extra info in their forum.