anchor.diff:  When used as a portfolio (for virtual currency), transactions add or remove units too.
   And feel free to invent new uses!
   
  -### Create transaction [POST]
  +## POST /v1/gamer/tx
  +
   A transaction is a Hash where the key is the unit, and the value is a positive (credit) or negative (debit) amount.
   So a single transaction can both credit and debit different units.
   
  
positive.code: 
  # Group Social features
  
  ## Friends [/v1/gamer/friends/{?status}]
  
  ### Get list of friends [GET]
  
  + Parameters
      + status (optional, string) ... "blacklist" to retrieve the blacklisted gamer's
  
negative.code: 
  * Google+ Sign-in: use the `ID` and the `oauth token` from Google+
  
  * anonymous: use the `gamer_id` and the `gamer_secret` from a previous login
  
  
  
  