title: Unity 5.3 GUI Button Won't Call OnClick Event
body: <p>So I'm trying to make a game with a title screen that you click to load the scene called <code>Game</code>. The button that I am using, created in the editor, doesn't work for whatever reason. When I create the button using code (Below), it does work. Why can't I use the editor to create my button and then call a function using <code>OnClick</code> by assigning it in the editor?</p>
  
  <p>If I am going about making a 'click to play' title screen wrong please help me.
  Thanks in advance!</p>
  
  <pre><code>GUI.Button(new Rect(Screen.width * .25, Screen.height * .4, Screen.width * .5, Screen.height * .1), "Test")
  </code></pre>