Cleanup example build.

Author: jdalton

example/Makefile

@@ -1,5 +1,5 @@
 .DELETE_ON_ERROR:
-BIN = ./node_modules/.bin
+BIN = ../node_modules/.bin
 
 build: bundle.js
 

example/package.json

@@ -30,9 +30,13 @@
   "devDependencies": {
     "babel-cli": "^6.11.4",
     "babel-preset-prometheusresearch": "^0.1.0",
+    "babelify": "^7.3.0",
+    "browserify": "^13.1.0",
     "eslint": "^3.3.1",
     "eslint-config-prometheusresearch": "^0.2.0",
     "eslint-plugin-react": "^6.1.2",
-    "react": "^15.3.1"
+    "react": "^15.3.1",
+    "react-dom": "^15.3.1",
+    "watchify": "^3.7.0"
   }
 }