code: function(id, view) {
      // No id
      if(!id) {
        throw new Error('View requires an id.');
  
      // Require unique id
      } else if(_viewHash[id]) {
        throw new Error('View requires a unique id');
  
      // Add
      } else {
        _viewHash[id] = view;
      }
  
      // Check if view is currently active
      var current = $state.current() || {};
      var templates = current.templates || {};
      var controllers = current.controllers || {};
      if(!!templates[id]) {
        _renderView(id, view, templates[id], controllers[id]);
      }
  
      // Implement destroy method
      view.destroy = function() {
        _unregister(id);
      };
  
      return view;
    }
docs: Register a view, also implements destroy method on view to unregister from manager
  
  @param  {String}       id   Unique identifier for view
  @param  {View}         view A view instance
  @return {$viewManager}      Itself, chainable