Merge branch 'master' into master

Author: brozot

README.md

@@ -42,7 +42,7 @@ Register the provider directly in your app configuration file config/app.php `co
 'providers' => [
 	// ...
 
-	LaravelFCM\FCMServiceProvider::class
+	LaravelFCM\FCMServiceProvider::class,
 ]
 ```
 

tests/mocks/MockTopicResponse.php

@@ -79,7 +79,7 @@ public function setError($error)
      */
     public function error()
     {
-        $this->error;
+        return $this->error;
     }
 
     /**
@@ -89,6 +89,6 @@ public function error()
      */
     public function shouldRetry()
     {
-        $this->error;
+        return (bool) $this->error;
     }
 }