title: How to create Navigation bar with back button to the left?
body: <p>In my app I am trying to navigate from the Second ViewController to the First ViewController using a Navigation Bar Back Button, but while dragging and dropping the navigation bar onto the ViewController in my App's XIB I am just able to get the bar with title.</p>
  <p>What am I doing wrong? I am using Xcode 4.6. and .xib files to design the view. Here's What I'm getting now:</p>
  <p><img src="https://i.stack.imgur.com/ettOY.png" alt="Navigation Bar Without Back Button" /></p>
  <p>Here's what I'm looking for:</p>
  <p><img src="https://i.stack.imgur.com/boUtf.png" alt="Navigation Bar with Back Button" /></p>