add main

add main :
public static void main(String[] args) {
		ObjectNode dataObjectNode = JsonNodeFactory.instance.objectNode();
		dataObjectNode.put("groupname", "测试群组");
		dataObjectNode.put("desc", "测试群组");
		dataObjectNode.put("approval", "false");
		dataObjectNode.put("public", "false");
		dataObjectNode.put("owner", "vrhfk5lxsz");
		ArrayNode arrayNode = JsonNodeFactory.instance.arrayNode();
		arrayNode.add("pfxfc9ggkz");
		arrayNode.add("xffslraxae");
		dataObjectNode.put("members", arrayNode);
		creatChatGroups(dataObjectNode);
	}