Load levels using new UI system (Unity 5)

I recently discovered how to load levels using the new UI system in Unity 5.

• Add a canvas to your scene.
• Add a button to your canvas.
• Create a new script as follows:

 using UnityEngine;
 using System.Collections;
 
 public class ButtonNextLevel : MonoBehaviour 
 {
     public void NextLevelButton(int index)
     {
         Application.LoadLevel(index);
     }
 
     public void NextLevelButton(string levelName)
     {
         Application.LoadLevel(levelName);
     }
 }

• Create a new empty game object and attach the script.
• On the Button (Script) component of the button, select the empty game object under the On Click() box.
• Select the ButtonnextLevel.NextLevelButton (string) method in the upper right dropdown button.
• Enter the name of the level you want to load (must be a scene in the build settings).