updated writing-helper.md (#1516)
updated writing-helper.md (#1516)

* updated writing-helper.md

This is just a suggestion to use ecmascript 6 wisely in code. This will not only make readers familiar with latest ecmascript but also gives better readability experience.

* updated writing-helper.md. 

Destructuring assignment done

MarkMT/guides,ubuntuvim/guides,MarkMT/guides,HeroicEric/guides,bmac/guides,davidpett/guides,MarkMT/guides,tleskin/guides,jkarsrud/guides,knownasilya/guides,nicobot/guides,davidpett/guides,MarkMT/guides,skaterdav85/guides,skaterdav85/guides,HeroicEric/guides,jkarsrud/guides,skaterdav85/guides,knownasilya/guides,knownasilya/guides,tleskin/guides,knownasilya/guides,ubuntuvim/guides,tleskin/guides,ubuntuvim/guides,nicobot/guides,nicobot/guides,HeroicEric/guides,skaterdav85/guides,bmac/guides,ubuntuvim/guides,davidpett/guides,bmac/guides,bmac/guides,jkarsrud/guides,jkarsrud/guides,davidpett/guides