Merge pull request typora#231 from Y1chenYao/gh-pages

Add mint-dark for mint theme

_posts/theme/2021-7-26-Mint.md → _posts/theme/2021-8-18-Mint.md

@@ -15,17 +15,21 @@ A fresh mint theme.
 ## Feature
 
 - Supports **English** and **中文**.
+- Supports **dark mode**
 - Code color scheme imported from [material-ocean](https://codemirror.net/theme/material-ocean.css)
 - Legible **math block** with dark background and light text
 
 ![mint1](/media/theme/mint/image1.png)
 ![mint2](/media/theme/mint/image2.png)
+![mint3](/media/theme/mint/image3.png)
+![mint4](/media/theme/mint/image4.png)
 
 ## Install
 
-1. Download `Mint.css` and `Mint` folder
+1. Download `mint.css`,  `mint-dark.css`, and `mint` folder 
+    (Note: if you want to use `mint-dark theme`, `mint.css` is required)
 2. Open Theme Folder from `Preference Panel` → `Appearance` section.
-3. Copy `Mint.css` and `Mint` folder into the newly opened folder.
-4. Restart typora, then select `Mint` from `Themes` menu.
+3. Copy `mint.css`,  `mint-dark.css`, and `mint` folder into the newly opened folder.
+4. Restart typora, then select `mint` or `mint-dark`from `Themes` menu.
 
-> Designed and tested on Windows. Not fully tested, but should work for MacOS/Linux.
+> Designed and tested on Windows. Not fully tested, but should work for MacOS/Linux.