title: Can't bind to 'md-tooltip' since it isn't a known property of 'span', upgrading from angular material 2.0.0-beta.10 to angular material 2.0.0-beta.11
body: <p>I have upgraded Angular Material from 2.0.0-beta.10 to 2.0.0-beta.11</p>
  
  <p>As you may know, MaterialModule has been removed from this version. Now the problem is that I don't know how to import all the modules that was included in MaterialModule.</p>
  
  <p>When I try to import the modules I need one by one, Chrome console gives me the errors like this: 
  <strong>"Can't bind to 'md-tooltip' since it isn't a known property of 'span'",</strong>
  even though in app.module.ts I have imported MatTooltipModule.</p>
  
  <p>Any ideas?</p>