Express middleware: filter out static routes
I'm serving with express middleware both apis and static files. I'm using the `RLWrapperBlackAndWhite` for filter out `localhost / 127.0.0.1` calls:

```javascript
const rateLimiterMemory = new RateLimiterMemory({
                  points: 11,
                duration: 1,
                execEvenly: false
            });
            const limiterWrapped = new RLWrapperBlackAndWhite({
                limiter: rateLimiterMemory,
                whiteList: ['127.0.0.1'],
                runActionAnyway: false,
            });
            const rateLimiterMiddleware = (req, res, next) => {
                limiterWrapped.consume(req.connection.remoteAddress)
                    .then(() => {
                        next();
                    })
                    .catch(_ => {
                        var errorMessage = APIHelper.createErrorMessage(429, '', '', 'Too Many Requests');
                        res.status(429).send(errorMessage);
                    });
            };
            self.app.use(rateLimiterMiddleware);
```


I'm serving static files as well and I often get the error 

```json
{
	message: {
		header: {
			status_code: 429
		},
		body: {
			error: {
				code: 429,
				status: 429,
				hint: "",
				description: "",
				message: "Too Many Requests"
			}
		}
	}
}
```

back from the limiter on these static routes

```javascript
 self.app.use(express.static(path.join(__dirname, 'public')));
        self._options.staticRoutes.forEach(route=> {
            self.app.use(BASEPATH+route,express.static(path.join(__dirname, 'public')));
        });
```

How can I filter out the static routes from the rate limiter middleware?
