anchor.diff:  
   
   
  +## Check token validity [/token/{usertoken}]
  +### Check to see if a token is valid [GET]
  +
  +    The session token passed in must be a server-side token. This request is valid only for Tidepool servers.
  +    The userid returned is the userid associated with the usertoken.
  +
  +
  +
  ++ Parameters
  +    + usertoken (required, string, `123123abcd`) ... Tidepool-assigned user token
  +
  ++ Request
  +    + Headers
  +    
  +            x-tidepool-session-token : 44sadf87.12x3840.aasd90JKj
  +
  ++ Response 200 (application/json)
  +    + Body
  +    
  +            {
  +              "userid": userid,
  +            }
  +
  ++ Response 401
  +
  +        When the session token is invalid or not provided.
  +
  ++ Response 404
  +
  +        When the usertoken was not found in the token store.
  +
  +
  +
  
positive.code: 
  ## Status [/status]
  ### Retrieve status information [GET]
  Returns a status health check with a list of status of its dependencies
  
  + Response 200
  
          If the server is operating properly and all dependencies are up and running.
  
          {
              "up" : [ "mongo" ],
  
negative.code: 
          When the username/password combination fails.
  
  ### Refresh a session token [GET]
  
  This call takes a token, and if the token was still valid, issues
  