public ApnsServiceBuilder asBatched() {
        return asBatched(5, 10);
    }
Construct service which will process notification requests in batch.
After each request batch will wait <code>waitTimeInSec (set as 5sec)</code> for more request to come
before executing but not more than <code>maxWaitTimeInSec (set as 10sec)</code>

Note: It is not recommended to use pooled connection
src/main/java/com/notnoop/apns/ApnsServiceBuilder.java