docs update, release 0.4.0

minor changes in README.md

kubeasz 0.3.0 release

kubeasz 0.2.2 release

kubeasz 0.2.1 release

kubeasz 0.2.0 release

update branch.md/TodoList.md

增加项目TodoList，release v1102-r1

更新flannel多网卡情况说明，准备release v1100-r1

fix:清理集群后calico的bgp路由残留