anchor.diff:  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.
   
  -+ Request (application/json)
  ++ Request (application/json; charset=utf-8)
   
       + Headers
       
  
positive.code: The balance is also returned each time you create a new transaction
  
  
  + Request (application/json)
  
      + Headers
      
  
negative.code: + Response 200 (application/json)
  
          [
              { "ts": '2014-08-27T16:44:17.796Z', "tx": { "Gold": 100 }, "desc": 'jsclient test' },
              { "ts": '2014-08-27T16:02:22.645Z', "tx": { "Gold": -100, "Silver": 1 }, "desc": 'jsclient test' },
              { "ts": '2014-08-27T16:02:22.371Z', "tx": { "Gold": 100 }, "desc": 'jsclient test' }
          ]
  
  ## GET /v1/gamer/tx/balance
  