create new buttons in Mosaico

[davide-caffaratti]

I've create my own implementation of Mosaico with two new button in the mainbar, but I'm not sure if is the best solution or there's another better than mine.

I add the function addCustomButton() that create two new button in the navbar :

function addCustomButton() {
        var vm = window.viewModel;
        if ($('#page .rightButtons').is(':visible')) {
            if (btn1_url != false) {
                $('#page .rightButtons').append('<button id="process-btn1" class="process-action ui-button ui-widget ui-state-default ui-corner-all ui-button-text-icon-primary" title="my btn title"><span class="ui-button-icon-primary ui-icon fa fa-fw fa-folder"></span><span class="ui-button-text">MY BTN NAME</span></button>\n');
            }
            if (btn_send_url != false) {
                $('#page .rightButtons').append('<button id="process-send" class="process-action ui-button ui-widget ui-state-default ui-corner-all ui-button-text-icon-primary" title="My btn 1 title"><span class="ui-button-icon-primary ui-icon fa fa-fw fa-arrow-left"></span><span class="ui-button-text">MY BTN 1 NAME</span></button>');
            }
        } 
        else {
            console.log('timeout 50');
            setTimeout(addCustomButton, 50);
        }
}

Then activate the buttons by call the function by

addCustomButton();`

The two buttons are working property, but the dude is if there's better and more elegant way for create button and functionality in Mosaico.