Simple ES6 Promises based queue, with optional (and flexible) concurrency.
promisqueue can be installed using npm:
npm install promisqueue
new PromisQueue(Object options): PromisQueue
PromisQueue#add(Function factory): Number- adds function argument that generates a promise to the queue (FIFO)PromisQueue#prepend(Function factory): Number- adds function argument that generates a promise to the queue (LIFO)
PromisQueue#length: Number- returns current length of buffer(added but not started promise generators)PromisQueue#currentConcurrency: Number- returns number of current concurrency limit

