add error handling example

stephenplusplus · stephenplusplus · commit 6398a5431333 · 2016-06-02T14:58:29.000-04:00
diff --git a/lib/vision/index.js b/lib/vision/index.js
@@ -269,6 +269,15 @@ Vision.prototype.annotate = function(requests, callback) {
  *   //   }
  *   // ]
  * });
+ *
+ * //-
+ * // To handle errors that occurred, check the length of the `errors` array.
+ * //-
+ * vision.detect('malformed-image.jpg', types, function(err, detections) {
+ *   if (detections.faces.errors.length > 0) {
+ *     // Errors occurred while trying to use this image for a face annotation.
+ *   }
+ * });
  */
 Vision.prototype.detect = function(images, options, callback) {
   var self = this;
