Upgrade to React 15 (#9)

Author: chvanikoff

package.json

@@ -21,8 +21,8 @@
     "JSONStream": "^1.0.7",
     "event-stream": "^3.3.2",
     "invariant": "^2.2.0",
-    "react": "^0.14.5",
-    "react-dom": "^0.14.5"
+    "react": "^15.0.1",
+    "react-dom": "^15.0.1"
   },
   "devDependencies": {
     "readline-sync": "^1.4.1"