title: numberOfSectionsInTableView not called
body: <p>In my ViewController, i have an UITableView and these methods :</p>
  
  <pre><code>func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -&gt; Int {
      if(self.mQuoteObjects.count &gt; 0){
          return 1
      }
      return 0
  
  }
  
  
  func tableView(tableView: UITableView, numberOfSectionsInTableView section: Int) -&gt; Int {
      let nbItem = self.mQuoteObjects.count
      return nbItem
  
  }
  </code></pre>
  
  <p>Method "numberOfRowsInSection" is correctly called, but "numberOfSectionsInTableView" is never called.</p>
  
  <p>What have i missed?</p>
  
  <p>You can respond in Obj-c</p>