Add repository fields to package.json and add a README to the example

example/README.md

@@ -0,0 +1,4 @@
+matrix-react-example
+====================
+
+A simple example of how to use the Matrix React SDK

example/package.json

@@ -3,6 +3,10 @@
   "version": "0.0.1",
   "description": "Example usage of matrix-react-sdk",
   "author": "matrix.org",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/matrix-org/matrix-react-sdk"
+  },
   "license": "Apache 2",
   "devDependencies": {
     "browserify": "^10.2.3",

package.json

@@ -3,6 +3,10 @@
   "version": "0.0.1",
   "description": "SDK for matrix.org using React",
   "author": "matrix.org",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/matrix-org/matrix-react-sdk"
+  },
   "license": "Apache 2",
   "main": "build/index.js",
   "scripts": {