message: add to extensions
diff: @@ -24,6 +24,7 @@ import { PluginState } from '../../mol-plugin/state';
  import { DownloadDensity } from '../../mol-plugin-state/actions/volume';
  import { PluginLayoutControlsDisplay } from '../../mol-plugin/layout';
  import { BuiltInTrajectoryFormat } from '../../mol-plugin-state/formats/trajectory';
  +import { MembraneOrientationData } from '../../extensions/membrane-orientation/behavior';
  require('mol-plugin-ui/skin/light.scss');
  @@ -34,7 +35,8 @@ const Extensions = {
  'cellpack': PluginSpec.Behavior(CellPack),
  'pdbe-structure-quality-report': PluginSpec.Behavior(PDBeStructureQualityReport),
  'rcsb-assembly-symmetry': PluginSpec.Behavior(RCSBAssemblySymmetry),
  - 'rcsb-validation-report': PluginSpec.Behavior(RCSBValidationReport)
  + 'rcsb-validation-report': PluginSpec.Behavior(RCSBValidationReport),
  + 'membrane-orientation': PluginSpec.Behavior(MembraneOrientationData)
  };
  const DefaultViewerOptions = {
  