fix link in docs, cleanup metadata

core-icon.html

@@ -30,7 +30,7 @@
  *
  *     <core-icon icon="fruit:cherry"></core-icon>
  *
- * See <a href="core-iconset.html">core-iconset</a> for more information about 
+ * See <a href="#core-iconset">core-iconset</a> for more information about 
  * how to use a custom iconset.
  *
  * The default set of includes these icons:

metadata.html

@@ -1,9 +1,11 @@
-<x-meta id="polymer-ui-icon" label="Polymer Icon">
-  <dependency url="polymer-ui-elements/polymer-ui-icon/polymer-ui-icon.html"></dependency>
+<x-meta id="core-icon" label="Polymer Core Icon" group="Core">
+
   <template>
-    <polymer-ui-icon icon="search" theme="polymer-ui-light-theme"></polymer-ui-icon>
+    <core-icon icon="search" theme="core-light-theme"></core-icon>
   </template>
+
   <template id="imports">
-    <link rel="import" href="polymer-ui-icon.html">
+    <link rel="import" href="core-icon.html">
   </template>
+
 </x-meta>