code: function getFile() {
      var file = grout.Project('test', 'scott').File({key: 'index.html', path: 'index.html'});
      console.log('fbUrl', file.fbUrl);
      console.log('fbRef', file.fbRef);
      file.get().then(function(app){
        console.log('file loaded:', app);
        document.getElementById("output").innerHTML = JSON.stringify(app);
      });
    }
docs: Get single file content