add uglification preset/script

Author: Geoff Davis

.babelrc

@@ -1,3 +1,4 @@
 {
-	"plugins": ["transform-flow-strip-types"]
+	"plugins": ["transform-flow-strip-types"],
+	"presets": ["es2015"]
 }

package.json

@@ -7,6 +7,7 @@
   "license": "MIT",
   "scripts": {
     "start": "webpack --watch",
+    "build": "DIST=true webpack",
     "lint": "eslint source",
     "flow": "flow check",
     "flow:init": "flow",

webpack.config.js

@@ -1,13 +1,23 @@
 'use strict';
+const webpack = require('webpack'),
+	isDIST = process.env.DIST,
+	uglifyConfig = {
+		cacheFolder: __dirname
+	};
+
+console.log(isDIST === 'true')
 module.exports = {
   entry: './source/index.js',
   output: {
   	path: __dirname+'/dist',
-  	filename: 'index.js'
+  	filename: `index.${isDIST === 'true' ? 'min.' : ''}js`
   },
   module: {
   	loaders: [
  		{ test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader' } 	
   	]
-  }
+  },
+  plugins: [
+  	(isDIST === 'true' ? new webpack.optimize.UglifyJsPlugin() : null)
+  ]
 };