code: function experiments(fn) {
    enqueue(function() {
      var data = {};
      var ids = window._vwo_exp_ids;
      if (!ids) return fn();
      each(ids, function(id) {
        var name = variation(id);
        if (name) data['Experiment: ' + id] = name;
      });
      fn(null, data);
    });
  }
docs: Get dictionary of experiment keys and variations.
  
  http://visualwebsiteoptimizer.com/knowledge/integration-of-vwo-with-kissmetrics/
  
  @param {Function} fn
  @return {Object}