Added option to use hosted heroku api when developing

frontend/package.json

@@ -27,6 +27,7 @@
     "build:assets": "NODE_ENV=production webpack -p",
     "build:html": "cp public/*.* dist/.",
     "start": "NODE_ENV=development webpack-dev-server --config webpack.config.js --progress --colors --port 3000",
+    "start:heroku": "UNLEASH_API=http://unleash.herokuapp.com npm run start",
     "lint": "eslint . --ext=js,jsx",
     "test": "npm run build",
     "test:ci": "npm run test",

frontend/webpack.config.js

@@ -71,7 +71,8 @@ module.exports = {
     devServer: {
         proxy: {
             '/api': {
-                target: 'http://localhost:4242',
+                target: process.env.UNLEASH_API || 'http://localhost:4242',
+                changeOrigin: true,
                 secure: false,
             },
         },