Very simple vector markers with FontAwesome icons, compatible with Leaflet v1.
var blueMarker = L.marker([lat, lon], {
icon: L.icon.fontAwesome({
iconClasses: 'fa fa-info-circle',
markerColor: '#00a9ce',
iconColor: '#FFF'
})
}).addTo(map);
var spinningMarker = L.marker([lat, lon], {
icon: L.icon.fontAwesome({
iconClasses: 'fa fa-circle-o-notch fa-spin',
markerColor: '#ff89b5',
iconColor: '#FFF',
iconXOffset: -2,
iconYOffset: 0,
})
}).addTo(map);