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third_party/polymer/components/iron-fit-behavior/README.md

Index: third_party/polymer/components/iron-fit-behavior/README.md
diff --git a/third_party/polymer/components/iron-fit-behavior/README.md b/third_party/polymer/components/iron-fit-behavior/README.md
index ed1b72f9bd857ec5c4cf49000703dddeb6a720c4..8dbc78e363dc06d8771fd21caeea4e452788f1d6 100644
--- a/third_party/polymer/components/iron-fit-behavior/README.md
+++ b/third_party/polymer/components/iron-fit-behavior/README.md
@@ -19,7 +19,7 @@ _[Demo and API docs](https://elements.polymer-project.org/elements/iron-fit-beha
 
 ##Polymer.IronFitBehavior
 
-Polymer.IronFitBehavior fits an element in another element using `max-height` and `max-width`, and
+`Polymer.IronFitBehavior` fits an element in another element using `max-height` and `max-width`, and
 optionally centers it in the window or another element.
 
 The element will only be sized and/or positioned if it has not already been sized and/or positioned
@@ -30,7 +30,28 @@ by CSS.
 | `position` set | Element is not centered horizontally or vertically |
 | `top` or `bottom` set | Element is not vertically centered |
 | `left` or `right` set | Element is not horizontally centered |
-| `max-height` or `height` set | Element respects `max-height` or `height` |
-| `max-width` or `width` set | Element respects `max-width` or `width` |
+| `max-height` set | Element respects `max-height` |
+| `max-width` set | Element respects `max-width` |
+
+`Polymer.IronFitBehavior` can position an element into another element using
+`verticalAlign` and `horizontalAlign`. This will override the element's css position.
+
+```html
+  <div class="container">
+    <iron-fit-impl vertical-align="top" horizontal-align="auto">
+      Positioned into the container
+    </iron-fit-impl>
+  </div>
+```
+
+Use `noOverlap` to position the element around another element without overlapping it.
+
+```html
+  <div class="container">
+    <iron-fit-impl no-overlap vertical-align="auto" horizontal-align="auto">
+      Positioned around the container
+    </iron-fit-impl>
+  </div>
+```