/**
 *  call-seq:
 *    Rev::IOWatcher.enable -> Rev::IOWatcher
 * 
 * Re-enable an IO watcher which has been temporarily disabled.  See the
 * disable method for a more thorough explanation.
 */
static VALUE Rev_IOWatcher_enable(VALUE self)
{
  Watcher_Enable(io, self);

  return self;  
}