add demo to README

README.md

@@ -1,16 +1,35 @@
 # Microfetch
 
-A stupidly simple fetch program written in Rust.
+A stupidly simple fetch tool, written in Rust. Runs in a fraction of a second,
+displays most nonsense people on r/unixporn care about. Aims to replace
+fastfetch on my system, but probably not on yours. Though you are more than
+welcome to use it on your system: it's fast.
+
+![Demo](.github/assets/demo.png)
 
 ## Features
 
-Microfetch can reliably detect and display the following:
-
-- Hostname/Username
-- Kernel
+- Fast
+- Really fast
+- Minimal dependencies
+- Actually very fast
+- Cool NixOS logo (other, inferior, distros are not supported)
+- Reliable detection of following info:
+  - Hostname/Username
+  - Kernel
     - Name
     - Version
     - Architecture
-- WM/Compositor and display backend
-- Memory Usage/Total Memory
-- Storage Usage/Total Storage (for `/` only)
+  - Current shell (from $SHELL)
+  - WM/Compositor and display backend
+  - Memory Usage/Total Memory
+  - Storage Usage/Total Storage (for `/` only)
+  - Shell Colors
+
+## Customizing
+
+You can't.
+
+## License
+
+Microfetch is licensed under [GPL3](LICENSE). See the license file for details.