convenient methods for rate limiting

src/Illuminate/Cache/CacheServiceProvider.php

@@ -31,7 +31,11 @@ public function register()
             return new MemcachedConnector;
         });
 
-        $this->app->singleton(RateLimiter::class);
+        $this->app->singleton(RateLimiter::class, function ($app) {
+            return new RateLimiter($app->make('cache')->driver(
+                $app['config']->get('cache.limiter')
+            ));
+        });
     }
 
     /**

src/Illuminate/Cache/RateLimiter.php

@@ -153,13 +153,25 @@ public function resetAttempts($key)
      * @param  int  $maxAttempts
      * @return int
      */
-    public function retriesLeft($key, $maxAttempts)
+    public function remaining($key, $maxAttempts)
     {
         $attempts = $this->attempts($key);
 
         return $maxAttempts - $attempts;
     }
 
+    /**
+     * Get the number of retries left for the given key.
+     *
+     * @param  string  $key
+     * @param  int  $maxAttempts
+     * @return int
+     */
+    public function retriesLeft($key, $maxAttempts)
+    {
+        return $this->remaining($key, $maxAttempts);
+    }
+
     /**
      * Clear the hits and lockout timer for the given key.
      *