Open Sourcing the Remix Store blog post (#372)

* Outline Remix Store post

* Write intro and "Who this is for" sections

* Add "What it takes to launch a store" section

* Tweaks from Tim

* Add header, description, and demo gifs

* Add descriptions and code to each of the interesting features

* Add conclusion and fix typos

* Update the og image

* Update blog post header

* Update the header image (again)

* Edits

* Compress images

* [does] -> does

* Quote bullets

Author: brookslybrand