README Suggestion

[dgh500]

Just a suggestion - in the readme gotchas section it says:

limiter.schedule(() => {
  const allTasks = tasksArray.map(x => processTask(x));
  // GOOD, we wait until all tasks are done.
  return Promise.all(allTasks);
});

When I initially read this I read this as meaning you could wrap .schedule around a Promise.all and it would throttle the requests within the Promise.all, which upon further reading and testing isn't the case and I ended up with the following as part of a larger function.

await Promise.allSettled(
   skus.map(async (sku) => {
     return await limiter.schedule(async () => {
        return await updateMonthlySalesForSku(sku);
      });
   })
)

The use of allSettled isn't relevant in this instance however the use of "// GOOD, we wait until all tasks are done." in the gotcha documentation gave me the impression that the async calls should all be wrapped by the .schedule function.

The documentation overall is very clear, just this example in particular I feel could be a little clearer.

[am1ru1]

can you PR?
your explanation is more in-line with the expectation of promise.all