message: Add more comments to TagTile to explain what it is
diff: @@ -24,11 +24,17 @@ import { isOnlyCtrlOrCmdKeyEvent } from '../../../Keyboard';
  import FlairStore from '../../../stores/FlairStore';
  +// A class for a child of TagPanel (possibly wrapped in a DNDTagTile) that represents
  +// a thing to click on for the user to filter the visible rooms in the RoomList to:
  +// - Rooms that are part of the group
  +// - Direct messages with members of the group
  +// with the intention that this could be expanded to arbitrary tags in future.
  export default React.createClass({
  displayName: 'TagTile',
  propTypes: {
  // A string tag such as "m.favourite" or a group ID such as "+groupid:domain.bla"
  + // For now, only group IDs are handled.
  tag: PropTypes.string,
  },
  