Enhance examples for Collections methods.#1726

Merged

aearly merged 3 commits intocaolan:masterfrom romanbalayan:docs-examples-improvement

Aug 5, 2021

+5,270-640

Commits on Oct 5, 2020

Enhance examples for Collections methods.
Roman Balayan
committed

Commits on Oct 13, 2020

Update collection example code, avoiding usage of IIFE on async/await examples
Roman Balayan
committed

Commits on Oct 15, 2020

Convert examples on async.auto, async.series, and async.parallel to samples using Promises and async/await
Roman Balayan
committed