Rate Limiter w/ Async

example.js

var limiter = new RateLimiter(5, 15000);

async.each([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], function(i, callback) {
    limiter.removeTokens(1, function(err, remainingRequests) {
        if(err) {
            callback(err);
        }else {
            console.log(i);
            callback();
        }
    })
}, function(error) {
    console.log('Done or error:', error);
});

Limits the output to log something to the console every 15 seconds, or around there.

Rate Limiter: https://github.com/jhurliman/node-rate-limiter
Async: https://github.com/caolan/async#each