Update README.md

Author: CoreyVidal

README.md

@@ -1,2 +1,37 @@
-# Medium.com-Modern-Dark
-Dark mode/style/theme for Medium.com
+# Medium Modern Dark  
+Dark mode/style/theme for Medium.com.
+
+## Preview
+
+![medium.com front page](https://user-images.githubusercontent.com/20746389/86400050-f1ac0700-bc75-11ea-8394-ee8c1c2056dc.png)
+
+![medium.com article - top](https://user-images.githubusercontent.com/20746389/86400082-ff618c80-bc75-11ea-9f62-8f0ad6dcff72.png)
+
+![medium.com article - bottom](https://user-images.githubusercontent.com/20746389/86400116-0f796c00-bc76-11ea-9d5f-f02b1360544b.png)
+
+## Installation
+
+This theme is an installable style add-on for the browser extension Stylus. To use this theme, you must install Stylus first:
+
+🎨 Stylus for [Chrome](https://chrome.google.com/webstore/detail/stylus/clngdbkpkpeebahjckkjfobafhncgmne).
+
+(I haven't tested it, but this theme possibly/probably works in Stylus for [Firefox](https://addons.mozilla.org/en-US/firefox/addon/styl-us/) and/or [Opera](https://addons.opera.com/en-gb/extensions/details/stylus/).)
+
+Once Stylus is installed:
+
+📦 [Click here to install this theme](https://raw.githubusercontent.com/CoreyVidal/Medium.com-Modern-Dark/master/medium-modern-dark.user.css). It supports automatic updates.
+
+![Install Latest Version](https://img.shields.io/badge/Install%20directly%20with-Stylus-116b59.svg)
+
+## History
+
+Medium used to have a [number of working themes on userstyles.org](https://userstyles.org/styles/browse/medium), but then last year Medium completely changed their website and obscured their style names with random letters. There doesn't seem to be any maintained themes since this switch, so I took a crack at it.
+
+This style is based on [this code](https://gist.github.com/xenogew/1339ef3b43b966a148114ce0c40f4ede) I found by [xenogew](https://gist.github.com/xenogew), (last updated September 2019) who based their work off of [this old userstyle](https://widget.userstyles.org/styles/167953/medium-dark) by [ultimatetoast27](https://widget.userstyles.org/users/726366) (last updated January 2019).
+
+
+## Notes
+
+I have no idea what I'm doing. I'm self-taught novice with CSS, and a lot of what I'm doing is just guessing, without actually knowing how it works. I've also never created a public repo before.
+
+I encourage you to fork it or do whatever you'd like with it. If someone wants to take over this repo, please do—I don't expect to be maintaining it.