To set your location , open js folder and find script.js . Open it with text editor (like sublime text). Change the latitude and longitude. First one is latitude and second one is longitude. To find your locations latitude and longitude, click here . The copy the numbers and put them in the .LatLng(40.6700, -73.9400) here.
center: new google.maps.LatLng(40.6700, -73.9400), // New York
If you want to change styles of the google map check this site