Merge pull request #440 from jyang/complete-sample-in-client-jsdoc

Completed minimal sample in JsDoc of stock client
diff --git a/src/node/examples/stock_client.js b/src/node/examples/stock_client.js
index 8e99090..b37e66d 100644
--- a/src/node/examples/stock_client.js
+++ b/src/node/examples/stock_client.js
@@ -39,5 +39,8 @@
  *
  * var StockClient = require('stock_client.js');
  * var stockClient = new StockClient(server_address);
+ * stockClient.getLastTradePrice({symbol: 'GOOG'}, function(error, response) {
+ *   console.log(error || response);
+ * });
  */
 module.exports = examples.Stock;