Leaflet Omnivore w/ Custom Marker

<!DOCTYPE html>

<title>Leaflet Everything!</title>
    <meta content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no' name='viewport'>
    <script src='//api.tiles.mapbox.com/mapbox.js/v1.6.1/mapbox.js'></script>
    <link href='//api.tiles.mapbox.com/mapbox.js/v1.6.1/mapbox.css' rel='stylesheet'>
    <script src='//api.tiles.mapbox.com/mapbox.js/plugins/leaflet-omnivore/v0.0.1/leaflet-omnivore.min.js'></script>
    <script src='//api.tiles.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v0.4.0/leaflet.markercluster.js'></script>
    <link href='//api.tiles.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v0.4.0/MarkerCluster.css' rel='stylesheet'>
    <link href='//api.tiles.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v0.4.0/MarkerCluster.Default.css' rel='stylesheet'>
    <style>
body { margin:0; padding:0; }
    #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
</head>

<body>
    <div id='map'></div>
    <script>
    var map = L.mapbox.map('map', 'faraday2.hb90naie', {
    detectRetina: true,
    zoomControl: true,
    //take away the zoom controls on the top left
    infoControl: false,
    maxZoom: 15
});
map.setView([34.0153, -93.1673], 7);

</script>
</body>
</html>

https://api.tiles.mapbox.com/mapbox.js/v1.6.1/mapbox.js

https://api.tiles.mapbox.com/mapbox.js/plugins/leaflet-omnivore/v0.0.1/leaflet-omnivore.min.js

https://api.tiles.mapbox.com/mapbox.js/plugins/leaflet-markercluster/v0.4.0/leaflet.markercluster.js