[UPD] addons table in README.md

README.md

@@ -25,6 +25,7 @@ addon | version | maintainers | summary
 [web_company_color](web_company_color/) | 15.0.1.1.0 |  | Web Company Color
 [web_domain_field](web_domain_field/) | 15.0.1.0.0 |  | Use computed field as domain
 [web_environment_ribbon](web_environment_ribbon/) | 15.0.1.0.0 |  | Web Environment Ribbon
+[web_group_expand](web_group_expand/) | 15.0.1.0.0 |  | Group Expand Buttons
 [web_ir_actions_act_multi](web_ir_actions_act_multi/) | 15.0.1.0.0 |  | Enables triggering of more than one action on ActionManager
 [web_m2x_options](web_m2x_options/) | 15.0.1.0.0 |  | web_m2x_options
 [web_m2x_options_manager](web_m2x_options_manager/) | 15.0.1.0.0 |  | Adds an interface to manage the "Create" and "Create and Edit" options for specific models and fields.