Merge pull request #323 from johanforssell/patch-1

README: Example on getting the tokens you should remove

README.md

@@ -125,6 +125,17 @@ sender.send(message, { registrationTokens: registrationTokens }, 10, function (e
   if(err) console.error(err);
   else    console.log(response);
 });
+
+// Q: I need to remove all "bad" token from my database, how do I do that? 
+//    The results-array does not contain any tokens!
+// A: The array of tokens used for sending will match the array of results, so you can cross-check them.
+sender.send(message, { registrationTokens: registrationTokens }, function (err, response) {  
+  var failed_tokens = response.results                           // Array with result for each token we messaged
+    .map((res, i) => res.error ? registrationTokens[i] : null)   // If there's any kind of error, 
+                                                                 // pick _the token_ from the _other_ array
+    .filter(token => token);                                     // Remove all the null values
+  console.log('These tokens are no longer ok:', failed_tokens);
+});
 ```
 ## Recipients
 

package.json

@@ -38,7 +38,8 @@
     "Chirag Choudhary <chirag200666@gmail.com> (https://github.com/chirag200666)",
     "Alexander Amin <alexander.amin@high5-it.de> (https://github.com/AlexAmin)",
     "Gaurav Nolkha <gaurav@swiftday.com> (https://github.com/vibgy)",
-    "Jan Kowalleck <jan.kowalleck@gmail.com> (https://github.com/jkowalleck)"
+    "Jan Kowalleck <jan.kowalleck@gmail.com> (https://github.com/jkowalleck)", 
+    "Johan Forssell <johan@forssell.me> (https://github.com/johanforssell)",
   ],
   "repository": {
     "type": "git",