add requirements

README.md

@@ -1,6 +1,6 @@
 # Zenbones
 
-Contrast-focused Neovim colorscheme.
+Contrast-focused vim/nvim colorscheme.
 
 ![zenbones-main-image](https://user-images.githubusercontent.com/7200153/130731060-85313919-8a04-45e2-813a-ea67f602d1c5.jpg)
 
@@ -8,6 +8,13 @@ Contrast-focused Neovim colorscheme.
 <a href="https://en.wikipedia.org/wiki/Ry%C5%8Dan-ji">Ryōan-ji</a>
 </p>
 
+## Requirements
+
+Primarily built for nvim but it works pretty well with vim. However here are some requirements to take full advantage of the theme:
+
+- 24-bit RGB colors (vim compiled with +termguicolors)
+- Terminal or GUI with bold and italic support
+
 ## Showcase
 
 <details>
@@ -27,7 +34,7 @@ Contrast-focused Neovim colorscheme.
 <details>
     <summary>Diagnostics</summary>
 
-<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">
+<img width="1128" alt="Diagnostics" src="https://user-images.githubusercontent.com/7200153/130731432-863956db-8061-4edb-b4a3-bf95f4631f5b.png">
 
 </details>