more fields into package.json

package.json

@@ -1,15 +1,31 @@
 {
   "name": "webextensions-examples",
+  "title": "WebExtensions Examples",
   "version": "1.0.0",
-  "description": "",
+  "description": "Example Firefox add-ons created using the WebExtensions API",
   "devDependencies": {
     "eslint": "^3.19.0"
   },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/mdn/webextensions-examples.git"
+  },
   "scripts": {
     "test": "eslint .",
     "lint": "eslint ."
   },
   "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/mdn/webextensions-examples/issues"
+  },
+  "keywords": [
+    "webextensions",
+    "webextensions-apis",
+    "mdn",
+    "firefox",
+    "mozilla"
+  ],
+  "homepage": "https://developer.mozilla.org/Add-ons/WebExtensions/Examples",
   "dependencies": {
     "babel-eslint": "^7.2.3"
   }