[FEATURE] websocket tool - gateway_balances method

js/apitool-websocket.js

@@ -228,6 +228,16 @@ var urlParams;
     _link: 'rippled-apis.html#account-currencies'
   });
   
+  Request('gateway_balances', {
+    account:           sample_address,
+    strict:            true,
+    hotwallet:         [],
+    ledger_index:      "validated",
+    account_index:     0,
+    _description: 'Returns a list of currencies the account can send or receive.',
+    _link: 'rippled-apis.html#gateway-balances'
+  });
+
   /* ---- ---- */
 
   Request('transaction_entry', {

ripple-api-tool.html

@@ -108,6 +108,7 @@
             <li><a href='#account_offers'>account_offers</a></li>
             <li><a href='#account_tx'>account_tx</a></li>
             <li><a href='#account_currencies'>account_currencies</a></li>
+            <li><a href='#gateway_balances'>gateway_balances</a></li>
             <br/>
             <li><a href='#transaction_entry'>transaction_entry</a></li>
             <li><a href='#tx'>tx</a></li>