mod(benchmark): correct size and provide documentation

README.md

@@ -4,6 +4,17 @@ This is my terminal based website. It is served as a tui application via ssh and
 
 It contains information about me and my projects as well as blog entries about something I feel like writing something about.
 
+## Terminal User Interface
+
+### Benchmark
+
+```sh
+zig build -Dbenchmark run 2> log
+```
+
+_Press any button_ at the end of the benchmark (when you are back to the original screen). `log` now contains the frame
+delay for each frame in each line of the output.
+
 ## Open tasks
 
 - [ ] Improve navigation