Update polymer 1.0 install to pick up newly added elements.

polymer_1.0.4/bower_components/iron-elements/bower.json

 {
   "name": "iron-elements",
-  "version": "1.0.1",
-  "description": "Iron elements are a set of visual and non-visual utility elements. They include elements for working with layout, user input, selection, and scaffolding apps.",
+  "version": "1.0.3",
+  "description": "A set of visual and non-visual utility elements. Includes elements for working with layout, user input, selection, and scaffolding apps",
   "keywords": [
     "web-components",
     "polymer",
     "utility",
     "user-input",
     "selection"
   ],
   "repository": {
     "type": "git",
     "url": "git://github.com/PolymerElements/iron-elements.git"
   },
   "dependencies": {
     "iron-a11y-announcer": "PolymerElements/iron-a11y-announcer#^1.0.0",
     "iron-a11y-keys": "PolymerElements/iron-a11y-keys#^1.0.0",
     "iron-a11y-keys-behavior": "PolymerElements/iron-a11y-keys-behavior#^1.0.0",
     "iron-ajax": "PolymerElements/iron-ajax#^1.0.0",
     "iron-autogrow-textarea": "PolymerElements/iron-autogrow-textarea#^1.0.0",
     "iron-behaviors": "PolymerElements/iron-behaviors#^1.0.0",
     "iron-collapse": "PolymerElements/iron-collapse#^1.0.0",
     "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
     "iron-doc-viewer": "PolymerElements/iron-doc-viewer#^1.0.0",
+    "iron-dropdown": "PolymerElements/iron-dropdown#^1.0.0",
     "iron-fit-behavior": "PolymerElements/iron-fit-behavior#^1.0.0",
     "iron-flex-layout": "PolymerElements/iron-flex-layout#^1.0.0",
     "iron-form": "PolymerElements/iron-form#^1.0.0",
     "iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#^1.0.0",
+    "iron-list": "PolymerElements/iron-list#^1.0.0",
     "iron-icon": "PolymerElements/iron-icon#^1.0.0",
     "iron-icons": "PolymerElements/iron-icons#^1.0.0",
     "iron-iconset": "PolymerElements/iron-iconset#^1.0.0",
     "iron-iconset-svg": "PolymerElements/iron-iconset-svg#^1.0.0",
     "iron-image": "PolymerElements/iron-image#^1.0.0",
     "iron-input": "PolymerElements/iron-input#^1.0.0",
     "iron-jsonp-library": "PolymerElements/iron-jsonp-library#^1.0.0",
     "iron-localstorage": "PolymerElements/iron-localstorage#^1.0.0",
     "iron-media-query": "PolymerElements/iron-media-query#^1.0.0",
     "iron-menu-behavior": "PolymerElements/iron-menu-behavior#^1.0.0",
@@ skipping 14 matching lines @@
   ],
   "license": "http://polymer.github.io/LICENSE.txt",
   "ignore": [
     "**/.*",
     "node_modules",
     "bower_components",
     "test",
     "tests"
   ]
 }