lib/foursquare2/checkins.rb
def add_checkin(options={})
      response = connection.post do |req|
        req.url "checkins/add", options
      end
      return_error_or_body(response, response.body.response.checkin)
    end
def add_checkin(options={})
      response = connection.post do |req|
        req.url "checkins/add", options
      end
      return_error_or_body(response, response.body.response.checkin)
    end
Checkin on behalf of the user.

 @param [Hash] options
 @option options String :venueId - Venue for the checkin.
 @option options String :venue - For venueless checkins (name or other identifier)
 @option options String :shout - Message to be included with the checkin.
 @option options String :broadcast - Required, one or more of private,public,facebook,twitter.  Comma-separated.
 @option options String :ll - Latitude and longitude in format LAT,LON
 @option options Integer :llAcc - Accuracy of the lat/lon in meters.
 @option options Integer :alt - Altitude in meters
 @option options Integer :altAcc - Accuracy of the altitude in meters