Here is the answer, due to cross domain restrictions I couldn't make Ajax Calls,so I instantiated your json in the code, but thats pretty trivial any ways.
Here is the modified JS
init(); //Calls the "grab my locayion" funcyion
function init() {
var map = L.map('map', {
center: [51.505, -0.09],
zoom: 13
})
L.tileLayer('http://{s}.tile.cloudmade.com/1fa9625d371549a298938509a2eac256/997/256/{z}/{x}/{y}.png').addTo(map);
var drivers =
[{
"name": "Jack Billström",
"profileId": "3",
"facebook_id": "100000650223192",
"email": "jack@codele.se",
"phone": "727396760",
"kikId": "jackiboi95",
"currentLat": "62.457201",
"currentLon": "17.350931",
"isDriver": "1"
}, {
"name": "John Doe",
"profileId": "2",
"facebook_id": "0",
"email": "johndoe@codele.se",
"phone": "700000000",
"kikId": "johndoe",
"currentLat": "62.442671",
"currentLon": "17.338829",
"isDriver": "1"
}, {
"name": "Andreas Ekström",
"profileId": "1",
"facebook_id": "didair",
"email": "didair@msn.com",
"phone": "739620011",
"kikId": "didair",
"currentLat": "62.457201",
"currentLon": "17.350931",
"isDriver": "1"
}
];
for (var i=0;i<drivers.length;i++)
{
var driver=drivers[i];
var m = L.marker(new L.LatLng(driver.currentLat,driver.currentLon)).addTo(map)
.bindPopup("<center><b>"+driver.name +"</b></center>").openPopup();
}
}
// API-URL: http://blackcab.didair.se/api/drivers