Update bower.json for Polymer elements and add PRESUBMIT.py

third_party/polymer/v1_0/components/iron-icon/.bower.json

 {
   "name": "iron-icon",
   "private": true,
-  "version": "1.0.1",
+  "version": "1.0.2",
   "license": "http://polymer.github.io/LICENSE.txt",
   "description": "An element that supports displaying an icon",
   "main": "iron-icon.html",
   "author": [
     "The Polymer Authors"
   ],
   "keywords": [
     "web-components",
     "polymer",
     "icon"
   ],
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/PolymerElements/iron-icon.git"
+  },
   "dependencies": {
     "iron-flex-layout": "polymerelements/iron-flex-layout#^1.0.0",
     "iron-meta": "polymerelements/iron-meta#^1.0.0",
     "polymer": "Polymer/polymer#^1.0.0"
   },
   "devDependencies": {
     "test-fixture": "polymerelements/test-fixture#^1.0.0",
     "iron-iconset": "polymerelements/iron-iconset#^1.0.0",
     "iron-icons": "polymerelements/iron-icons#^1.0.0",
     "iron-component-page": "polymerelements/iron-component-page#^1.0.0",
     "web-component-tester": "*",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0"
   },
   "homepage": "https://github.com/PolymerElements/iron-icon",
-  "_release": "1.0.1",
+  "_release": "1.0.2",
   "_resolution": {
     "type": "version",
-    "tag": "v1.0.1",
-    "commit": "530b0156756487b4c352d67a9e636724d6a4fe5e"
+    "tag": "v1.0.2",
+    "commit": "f9246c47ecb1c682f0fb9ea48255d5f7debd1e03"
   },
   "_source": "git://github.com/PolymerElements/iron-icon.git",
-  "_target": "^1.0.0",
+  "_target": "~1.0.0",
   "_originalSource": "PolymerElements/iron-icon"
 }