Add example of programmatic usage

examples/custom-server/nuxt.config.js

@@ -0,0 +1 @@
+module.exports = {}

examples/custom-server/package.json

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+{
+  "name": "nuxt-custom-server",
+  "dependencies": {
+    "express": "^4.15.3",
+    "nuxt": "^1.0.0-rc1"
+  },
+  "scripts": {
+    "dev": "node server.js",
+    "build": "nuxt build",
+    "start": "NODE_ENV=production node server.js"
+  }
+}

examples/custom-server/server.js

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+const app = require('express')()
+const { Nuxt, Builder } = require('nuxt')
+
+const host = process.env.HOST || '127.0.0.1'
+const port = process.env.PORT || 3000
+
+// Import and Set Nuxt.js options
+let config = require('./nuxt.config.js')
+config.dev = !(process.env.NODE_ENV === 'production')
+
+const nuxt = new Nuxt(config)
+
+// Start build process if
+if (config.dev) {
+  const builder = new Builder(nuxt)
+  builder.build()
+}
+
+// Give nuxt middleware to express
+app.use(nuxt.render)
+
+// Start express server
+app.listen(port, host)
+console.log('Server listening on ' + host + ':' + port)