Update 'README.md'

README.md

@@ -8,6 +8,15 @@ source ~/elgato_env/bin/activate
 pip install -r requirements.txt
 ```
 
+for `darkmode` script
+
+```
+brew install brightness
+brew install smudge/smudge/nightlight
+```
+
+Download https://github.com/jenghis/nshift
+
 ## Compile
 
 ```