Merge remote-tracking branch 'upstream/gh-pages' into gh-pages

Conflicts:
	index.html

Author: liuwenchao

bower_components/core-action-icons/README.md

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+core-action-icons
+=================
+
+This is a _resource_ component which contains image assets for the default core icon set.
+
+While HTML, JS, and CSS can be combined for production deployments by tools like Vulcanizer, some assets are easier to deliver as is. 
+
+Projects using the default core icon set should include this component in deployments verbatim.

bower_components/core-action-icons/action-icons.png

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+core-component-page
+===================
+
+See the [component page](http://polymer.github.io/core-component-page) for more information.

bower_components/core-component-page/README.md

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+{
+  "name": "core-component-page",
+  "private": true,
+  "dependencies": {
+    "platform": "Polymer/platform#0.2.4",
+    "core-action-icons": "Polymer/core-action-icons#0.2.4"
+  },
+  "version": "0.2.4"
+}