<!DOCTYPE html>
<html class="no-js">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <title>Experiment</title>
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link rel="stylesheet" href="css/lib/semantic.min.css">
        <link rel="stylesheet" href="css/main.css">
    </head>
    <body>
        <div id="main" class="main"></div>
        <!-- TODO: Show loading while js downloads -->
        <script data-main="src/main.js" src="lib/require.js"></script>
    </body>
</html>

<!DOCTYPE html>
<html class="no-js">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <title>Experiment</title>
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link rel="stylesheet" href="css/lib/semantic.min.css">
        <link rel="stylesheet" href="css/main.css">
    </head>
    <body>
        <div id="main" class="main">
            <div class="ui active large text inline loader">Loading Experiment</div>
        </div>
        <script data-main="src/main.js" src="lib/require.js"></script>
    </body>
</html>

Add 'loading..' to main page before javascript loads
Add 'loading..' to main page before javascript loads
