README.md
iron-autogrow-textarea
iron-autogrow-textarea is an element containing a textarea that grows in height as more
lines of input are entered. Unless an explicit height or the maxRows property is set, it will
never scroll.
Example:
<iron-autogrow-textarea></iron-autogrow-textarea>
Because the textarea's value property is not observable, you should use
this element's bind-value instead for imperative updates.