How to clean up text pasted from Google Docs with Atom and Regular Expressions

Have you ever pasted text from Google Docs onto your blog (WordPress or otherwise) and had to fix wacky formatting? Here is how to quickly strip out all those extra HTML tags using regular expressions with Atom.io, a free text editor.

Links:

Atom, a free text editor available on Windows, Mac, and Linux: http://atom.io

Regular Expressions (regex) cheat sheet: http://rexegg.com/regex-quickstart.html