old_contents: var choo = require('choo')
  
  var app = choo()
  app.route('/', require('./views/app'))
  app.use(require('./model'))
  app.mount('#app')
  
new_contents: var choo = require('choo')
  
  var app = choo()
  app.route('*', require('./views/app'))
  app.use(require('./model'))
  app.mount('#app')
  
subject: Use catchall route