Add gpool (avelino#2315)

README.md

@@ -655,6 +655,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [go-trylock](https://github.com/subchen/go-trylock) - TryLock support on read-write lock for Golang.
 * [GoSlaves](https://github.com/themester/GoSlaves) - Simple and Asynchronous Goroutine pool library.
 * [goworker](https://github.com/benmanns/goworker) - goworker is a Go-based background worker.
+* [gpool](https://github.com/Sherifabdlnaby/gpool) - manages a resizeable pool of context-aware goroutines to bound concurrency.
 * [grpool](https://github.com/ivpusic/grpool) - Lightweight Goroutine pool.
 * [parallel-fn](https://github.com/rafaeljesus/parallel-fn) - Run functions in parallel.
 * [pool](https://github.com/go-playground/pool) - Limited consumer goroutine or unlimited goroutine pool for easier goroutine handling and cancellation.