add screenshots

README.md

@@ -2,12 +2,30 @@
 
 Contrast-focused Neovim colorscheme.
 
-![zenbones-main-image](https://user-images.githubusercontent.com/7200153/130729543-7695dc62-0fd0-4d29-9e33-29c11756cc6f.jpg)
+![zenbones-main-image](https://user-images.githubusercontent.com/7200153/130731060-85313919-8a04-45e2-813a-ea67f602d1c5.jpg)
 
 <p align="center">
-  <small><a href="https://en.wikipedia.org/wiki/Ry%C5%8Dan-ji">Ryōan-ji</a></small>
+<a href="https://en.wikipedia.org/wiki/Ry%C5%8Dan-ji">Ryōan-ji</a>
 </p>
 
+## Showcase
+
+<details>
+    <summary>Diff highlights</summary>
+
+<img width="1128" alt="Vim diff" src="https://user-images.githubusercontent.com/7200153/130730698-38c2f493-4161-4146-bb68-00cd9a87d2bd.png">
+
+</details>
+ 
+Search:
+
+<img width="1128" alt="Search" src="https://user-images.githubusercontent.com/7200153/130731292-928fcffc-c252-425c-8c61-e292df3fa478.png">
+
+Diagnostics:
+<img width="1128" alt="Screen Shot 2021-08-25 at 1 16 02 PM" src="https://user-images.githubusercontent.com/7200153/130731432-863956db-8061-4edb-b4a3-bf95f4631f5b.png">
+
+
+
 ## Other implementations
 
 - [iterm2](https://github.com/mcchrish/zenbones-iterm)