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

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

 {
   "name": "iron-meta",
-  "version": "1.0.1",
+  "version": "1.0.3",
   "keywords": [
     "web-components",
     "polymer"
   ],
   "license": "http://polymer.github.io/LICENSE.txt",
   "description": "Useful for sharing information across a DOM tree",
   "private": true,
   "authors": [
     "The Polymer Authors"
   ],
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/PolymerElements/iron-meta.git"
+  },
   "dependencies": {
     "polymer": "Polymer/polymer#^1.0.0"
   },
   "devDependencies": {
+    "paper-styles": "polymerelements/paper-styles#^1.0.4",
     "iron-component-page": "polymerelements/iron-component-page#^1.0.0",
     "test-fixture": "polymerelements/test-fixture#^1.0.0",
     "web-component-tester": "*",
     "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0"
   },
   "homepage": "https://github.com/PolymerElements/iron-meta",
-  "_release": "1.0.1",
+  "_release": "1.0.3",
   "_resolution": {
     "type": "version",
-    "tag": "v1.0.1",
-    "commit": "74e95dc020cfebfbf4343fb952f0f224ccd47f8e"
+    "tag": "v1.0.3",
+    "commit": "91529259262b0d8f33fed44bc3fd47aedf35cb04"
   },
   "_source": "git://github.com/PolymerElements/iron-meta.git",
-  "_target": "^1.0.0",
+  "_target": "~1.0.0",
   "_originalSource": "PolymerElements/iron-meta"
 }