add: demo

demo/bar.liquid

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+<footer>Copyright @ 2016, Harttle</footer>

demo/foo.liquid

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title></title>
+</head>
+<body>
+  <h1>Welcome to shopify-liquid!</h1>
+  {% include 'bar' %}
+</body>
+</html>

demo/index.js

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+var express = require('express');
+var app = express();
+var Liquid = require('..');
+
+var engine = Liquid({
+    root: __dirname,  // for layouts and partials
+    extname: '.liquid'
+});
+
+app.engine('liquid', engine.express()); // register liquid engine
+app.set('views', __dirname);            // specify the views directory
+app.set('view engine', 'liquid');       // set to default
+
+app.get('/', function (req, res) {
+    res.render('foo');
+});
+
+app.listen(3000, function () {
+    console.log('Example app listening on port 3000!');
+});

demo/package.json

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+{
+  "name": "express-demo",
+  "version": "1.0.0",
+  "description": "Express Demo Using Shopify-Liquid",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "harttle",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.14.0"
+  }
+}