title: Simulator freeze in Swift, breakpoint?
body: <p>iOS rookie here struggling through the early stages of an app that was initially led by a mentor. Issue at the moment occurs upon attempting to button "next" to next page and save the inputted data into firebase. On the simulator, instead of loading to the next page, and inputting data into firebase, it cuts to this code: </p>
  
  <pre><code>    @IBAction func greetingSubmit(sender: AnyObject) {
      var myRootRef = Firebase(url:"https://xxx.firebaseio.com")
      let timestamp = NSDateFormatter.localizedStringFromDate(NSDate(), dateStyle: .MediumStyle, timeStyle: .ShortStyle)
      var painAndProgress = ["userID": myRootRef.authData.uid, "pain": painLevelSlider.value, "progress":progressSlider.value, "date":timestamp]
      var painAndProgressRef = myRootRef.childByAppendingPath("painAndProgress")
      var autoRef = painAndProgressRef.childByAutoId()
      autoRef.setValue(painAndProgress)
  }
  </code></pre>
  
  <p>On the second to last line, 
          var autoRef = painAndProgressRef.childByAutoId()</p>
  
  <p>There is a message to the right: Thread 1: Breakpoint 1.1
  which I presume is causing this, but I don't know the fix.</p>