gmaps4rails:getposition and replace markers

getposition.js.coffee

@get_current_position = () =>
        navigator.geolocation.getCurrentPosition @nearby_places, @failed_alert

@nearby_places = (position) =>
        res = $.getJSON "/places/nearby.json", { lat: position.coords.latitude, long: position.coords.longitude },
                (json) ->
                        Gmaps.map.replaceMarkers json

@failed_alert = () =>
        alert "failed to get current position."