Add user-importable files to bower.json's main field for modulizer.

bower.json

@@ -1,6 +1,48 @@
 {
   "name": "polymer",
   "main": [
+    "lib/elements/array-selector.html",
+    "lib/elements/custom-style.html",
+    "lib/elements/dom-bind.html",
+    "lib/elements/dom-if.html",
+    "lib/elements/dom-module.html",
+    "lib/elements/dom-repeat.html",
+    "lib/legacy/class.html",
+    "lib/legacy/legacy-element-mixin.html",
+    "lib/legacy/mutable-data-behavior.html",
+    "lib/legacy/polymer-fn.html",
+    "lib/legacy/polymer.dom.html",
+    "lib/legacy/templatizer-behavior.html",
+    "lib/mixins/dir-mixin.html",
+    "lib/mixins/disable-upgrade-mixin.html",
+    "lib/mixins/element-mixin.html",
+    "lib/mixins/gesture-event-listeners.html",
+    "lib/mixins/mutable-data.html",
+    "lib/mixins/properties-changed.html",
+    "lib/mixins/properties-mixin.html",
+    "lib/mixins/property-accessors.html",
+    "lib/mixins/property-effects.html",
+    "lib/mixins/strict-binding-parser.html",
+    "lib/mixins/template-stamp.html",
+    "lib/utils/array-splice.html",
+    "lib/utils/async.html",
+    "lib/utils/boot.html",
+    "lib/utils/case-map.html",
+    "lib/utils/debounce.html",
+    "lib/utils/flattened-nodes-observer.html",
+    "lib/utils/flush.html",
+    "lib/utils/gestures.html",
+    "lib/utils/html-tag.html",
+    "lib/utils/import-href.html",
+    "lib/utils/mixin.html",
+    "lib/utils/path.html",
+    "lib/utils/render-status.html",
+    "lib/utils/resolve-url.html",
+    "lib/utils/settings.html",
+    "lib/utils/style-gather.html",
+    "lib/utils/templatize.html",
+    "lib/utils/unresolved.html",
+    "polymer-element.html",
     "polymer.html"
   ],
   "license": "http://polymer.github.io/LICENSE.txt",