Add JS reference article: Assignment Operators

[daniel-chung]

Adding a new JS reference article on Assignment Operators

[daniel-chung]

This is my first PR on the wiki page--happy to make updates if I'm not conforming to style and/or guidelines.

[ghost]

Remove this line

[daniel-chung]

Thanks for the comments, @atjonathan !
Made all of the updates--but let me know if I missed any.

[Rafase282]

Change this to something else like JavaScript Assignment Operators or somethign along the lines. We use this header for the article name in the site's wiki so it is important to have a h1

# JavaScript Assignment Operators

[Rafase282]

-## Introduction
+### Introduction

This is so it will display data up to the firs ## in the chat, as it is right now, calling that article from the chat would only give the title and no data snippet.

[daniel-chung]

Thanks for the feedback, @Rafase282 . I just added the title back

[Rafase282]

@daniel-chung One last thing, fix that and I'll merge. Thanks for your contribution.

[daniel-chung]

@Rafase282 done. Thanks again!