update readme and added binary

README.md

@@ -4,12 +4,18 @@ This is a cursed terminal video player. This improves on some previous designs b
 
 Mileage may vary depending on how fast your terminal is. In my testing, I've found that [alacritty](https://github.com/alacritty/alacritty) works rather well.
 
-```
+```sh
 .\tvp filename [threshold] 
 ```
 
 The threshold has to be an integer from 0 to 255, and defaults to 10. The threshold affects how much the colour of a certain pixel has to change before it will be redrawn. A lower threshold results in more redraws in most cases, and leads to choppy video.
 
+Built on Manjaro with this command:
+
+```sh
+g++ src/main.cpp -O3 -o ./tvp `pkg-config --cflags --libs opencv4`
+```
+
 Below is a preview of how it looks:
 
 ![video playing in terminal](imgs/video.gif)