Fix heroku deploys (#27)

* Move rejection warning

* Fix opn rejection

* Remove opn all together

build/dev-server.js

@@ -1,5 +1,9 @@
 require('./check-versions')()
 
+process.on('unhandledRejection', (reason) => {
+	console.log('REJECTION', reason)
+})
+
 var config = require('../config')
 if (!process.env.NODE_ENV) {
   process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV)
@@ -77,7 +81,7 @@ devMiddleware.waitUntilValid(() => {
   console.log('> Listening at ' + uri + '\n')
   // when env is testing, don't need open it
   if (autoOpenBrowser && process.env.NODE_ENV !== 'testing') {
-    opn(uri)
+    //
   }
   _resolve()
 })

build/webpack.prod.conf.js

@@ -9,10 +9,6 @@ var HtmlWebpackPlugin = require('html-webpack-plugin')
 var ExtractTextPlugin = require('extract-text-webpack-plugin')
 var OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')
 
-process.on('unhandledRejection', (reason) => {
-	console.log('REJECTION', reason)
-})
-
 var env = process.env.NODE_ENV === 'testing'
   ? require('../config/test.env')
   : config.build.env