Merge pull request #450 from jtrs/master

pass validator attribute to iron-autogrow-textarea make possible to use custom validator

Author: notwaldorf

paper-textarea.html

@@ -56,6 +56,7 @@
       <iron-autogrow-textarea id="input" class="paper-input-input"
         bind-value="{{value}}"
         invalid="{{invalid}}"
+        validator$="[[validator]]"
         disabled$="[[disabled]]"
         autocomplete$="[[autocomplete]]"
         autofocus$="[[autofocus]]"