message: Mention why line wrap is disabled.
diff: @@ -140,6 +140,7 @@ export const EditYAML = connect(stateToProps)(
  const es = this.ace.getSession();
  es.setMode('ace/mode/yaml');
  this.ace.setTheme('ace/theme/clouds');
  + // Disable line wrap so that our tests pass on small screens.
  es.setUseWrapMode(false);
  this.doc = es.getDocument();
  }
  