Upgrade to React 0.10.0

* Replace " class=" with " className=" in source HTML to match the
  change somewhere between React 0.4.0 and 0.10.0
* Manage React dependency with Bower for easier upgrading

.bowerrc

@@ -0,0 +1,3 @@
+{
+  "directory": "public/bower_components"
+}

public/bower_components/react/.bower.json

@@ -0,0 +1,16 @@
+{
+  "name": "react",
+  "version": "0.10.0",
+  "main": "react.js",
+  "homepage": "https://github.com/facebook/react-bower",
+  "_release": "0.10.0",
+  "_resolution": {
+    "type": "version",
+    "tag": "v0.10.0",
+    "commit": "4862309b39ceef32a65c160cd9987eccdfb29c38"
+  },
+  "_source": "git://github.com/facebook/react-bower.git",
+  "_target": "~0.10.0",
+  "_originalSource": "react",
+  "_direct": true
+}