big refacting of communitation architect

opencv-motion-detect/evcloudsvc-cloud-api.md

@@ -225,7 +225,10 @@ get value for specified key in cloud db. keys list is queried by /keys api
 ##### params
 - sn: string
 - op: on|off
-- addr: string. tcp socket on cloud. eg: x.com:8899
+- ip: string. ip of public accessable host
+- port(optional): number. port of public host ssh. default 22.
+- user: ssh user of the public accessable host
+- password: ssh password of the public accessable host
 ##### return
 - type: json
 - example