title: why angular material design get rid of date picker
body: <p>It makes sense to use mobile default date picker, but how to get a consistent date picker on a regular web application when using material design?</p>
  
  <p>angular material design website(no picker):
  <a href="https://material.angularjs.org/#/">https://material.angularjs.org/#/</a></p>
  
  <p>google material design website(has picker):
  <a href="http://www.google.com/design/spec/components/pickers.html">http://www.google.com/design/spec/components/pickers.html</a></p>