Make clientside Handlebars async!
an in browser implementation of https://github.com/LoicMahieu/handlebars-async
copy lib/handlebars.js to your server.
include it in your project after the main Handlebars file.
handlebarsAsync(Handlebars);
Handlebars.registerHelper('async', function(arg1) {
var done = this.async();
setTimeout(function() {
done(null, arg1.toUpperCase())
done();
}, 1000);
});
var tpl = Handlebars.compile('{{asyncHelper "value"}}');
tpl(function (err, result) {
// result == "VALUE"
});