tg := tango.New()
    // add standard directives
    tg.AddDirective(
        std.Router{},
        std.Repeat{},
        std.Click{},
        std.Bind{},
        std.Change{},
        std.Model{},
        std.Attr{})
    // add a default path
    tg.AddRoute("/", &tango.Controller{
        Template: func () string {
        // return some html 
        },
        Work: func (scope *core.Scope, lifecycle core.Lifecycle) {
        // add logic to the scope
        }
    })
    // bootstrap tango
    tg.Bootstrap()