code: function normalizeEvents(events, rtn, prefix) {
          rtn = rtn || {};
          if (prefix) {
              prefix += ':';
          } else {
              prefix = '';
          }
          var value, valueType;
          for (var key in events) {
              if (events.hasOwnProperty(key)) {
                  value = events[key];
                  valueType = typeof value;
                  if (valueType === 'string' || valueType === 'function') {
                      rtn[prefix + key] = value;
                  } else if (value) {
                      normalizeEvents(value, rtn, prefix + key);
                  }
              }
          }
          return rtn;
      }
docs: Allow events to be referenced in a hierarchical structure.  All parts in the
  hierarchy will be appended together using ":" as the separator
  window: {
  scroll: 'onScroll',
  resize: 'onResize'
  }
  will return as
  {
  'window:scroll': 'onScroll',
  'window:resize': 'onResize'
  }
  }