chore(*): include button module

Author: dobromirts

live-editing/configs/TreeGridConfigGenerator.ts

@@ -177,9 +177,9 @@ export class TreeGridConfigGenerator implements IConfigGenerator {
                 '/src/app/tree-grid/tree-grid-sorting-sample/tree-grid-contextmenu/tree-grid-contextmenu.component.ts',
                 '/src/app/tree-grid/tree-grid-sorting-sample/tree-grid-contextmenu/tree-grid-contextmenu.component.scss'],
             appModuleConfig: new AppModuleConfig({
-                imports: ['IgxPreventDocumentScrollModule', 'IgxTreeGridModule', 'TreeGridSortingSampleComponent', 'IgxIconModule', 'IgxSimpleComboModule', 'TreeGridContextmenuComponent'],
+                imports: ['IgxPreventDocumentScrollModule', 'IgxTreeGridModule', 'TreeGridSortingSampleComponent', 'IgxIconModule', 'IgxSimpleComboModule', 'IgxButtonModule', 'TreeGridContextmenuComponent'],
                 ngDeclarations: ['TreeGridSortingSampleComponent', 'TreeGridContextmenuComponent'],
-                ngImports: ['IgxPreventDocumentScrollModule', 'IgxTreeGridModule', 'IgxIconModule', 'IgxSimpleComboModule']
+                ngImports: ['IgxPreventDocumentScrollModule', 'IgxTreeGridModule', 'IgxIconModule', 'IgxSimpleComboModule', 'IgxButtonModule']
             }),
             component: 'TreeGridSortingSampleComponent',
             shortenComponentPathBy: '/tree-grid/'