What is the role of webcal in Icalendar? How can I sync a calendar in Rails to my device calendar like "Google calendar"?

Question

I want to sync a rails calendar with local device calendar like Google Calendar. I have converted my rails calendar into an .ics format. How do I move forward? This is how I have created it: controller:

def index
@calendar_events = current_account.calendar_events.active.in_chronological_order.from_today
    respond_to do |samp|
        samp.html
        samp.ics do
          calendar = Icalendar::Calendar.new
          for calendar_event in @calendar_events
            calendar.add_event(calendar_event.to_ics)
          end
          calendar.publish
          render :text => calendar.to_ical
        end
      end
end

in View:

<%= link_to 'sync to my calendar',:format => :ics, :controller => 'talent_calendar_events', :protocol => "webcal",  :action => :index %>