https://api.sciener.com/v3/group/update
Update the name of a Group.

Name	Type	Required	Description
clientId	String	Y	The app_id which is assigned by system when you create an application
accessToken	String	Y	Access token
groupId	Int	Y	Group id
name	String	Y	Group name
date	Long	Y	Current time (timestamp in millisecond)

Parameter	Type	Description
errcode	Int	Error code
errmsg	String	Error message

{
    "errcode": 0, 
    "errmsg": "none error message",
    "description": "none error message or means yes"
}