Merge "docs: Adding Udacity link to Android TV training page" into mnc-docs

<p class="note"><strong>Note:</strong> For details on how to publish your TV apps in Google Play,

see <a href="{@docRoot}distribute/googleplay/tv.html">Distribute to Android TV</a>.</p>

<div class="wrap">

  <div class="cols">

    <div class="col-1of2">

      <p>If you prefer to learn through interactive video training, check out this online course

      about extending your apps to work with Android TV.</p>

      <p><a href="https://www.udacity.com/course/ud875B" class="button">

        Start the video course</a>

      </p>

    </div>

    <div class="col-1of2">

      <iframe width="300" height="169"

      src="//www.youtube.com/embed/anJtq2rtrA8?autohide=1&showinfo=0"

      frameborder="0" allowfullscreen="" style="float: right; margin: 0 0 20px 20px;"></iframe>

    </div>

  </div>

</div>

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