anchor.diff:  
   + Response 549
   
  -### List transactions [GET]
  +## GET /v1/gamer/tx{?unit}
   
   Use this API to list the transactions that took place for this gamer. You can specify an optional
   `?unit=xxx` parameter where `xxx` is the unit (Silver, Gold or Arrows in our example). If
   `unit` is specified, the result will only contain transactions about this unit.
  +
  ++ Parameters
  +    + unit (optional, string, `Gold`) ... The domain
   
   + Request (application/json)
   
  
positive.code:             "message" : "Invalid App Credentials"
          }
  
  ## Unlink authentication network [/v1/gamer/unlink]
  
  Used to unlink a user account from Facebook or Google+ credentials.
  
  ### Unlink [POST]
  
  + Request
  
  
negative.code: **Note:** It is your responsibility to store these to help the user log in later (in RAW mode).
  
  
  ## POST /v1/gamer/login
  
  
  ### Body description
  
  