title: TypeError: window.initMap is not a function
body: <p>I am following this tutorial, basically copy all the code</p>
  
  <p><a href="https://developers.google.com/maps/documentation/javascript/tutorial">https://developers.google.com/maps/documentation/javascript/tutorial</a></p>
  
  <p>but got an error saying that the initMap function is not a function.
  I am using angularjs in my project, could that be causing problems?</p>
  
  <p>I copied the same code into plunker and it works just fine...
  What are the possible issues? </p>