Add Express 3.x example.

examples/express3/app.js

@@ -0,0 +1,13 @@
+var express = require('express')
+  , app = express();
+
+app.configure(function() {
+  app.set('views', __dirname + '/views');
+  app.use(express.logger());
+});
+
+app.get('/', function(req, res){
+  res.render('index.ltxb', { name: 'Bruce Wayne', aliases: [ 'The Batman', 'The Dark Knight' ] });
+});
+
+app.listen(3000);

examples/express3/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "ltxb-example",
+  "version": "0.0.0",
+  "dependencies": {
+    "express": "3.x.x",
+    "ltxb": "0.x.x"
+  }
+}

examples/express3/views/index.ltxb

@@ -0,0 +1,6 @@
+xml.n('superhero')
+  .c('name', { 'primary': 'true' }).t(name).up();
+
+aliases.forEach(function(alias) {
+  xml.c('alias').t(alias);
+});