Update README.md

Author: atainter

README.md

@@ -1,5 +1,5 @@
 # Tracking-Turret
-A motion tracking turret.
+A motion tracking turret for https://www.youtube.com/watch?v=HoRPWUl_sF8
 
 ## Install Guide
 
@@ -83,4 +83,4 @@ RELAY_PIN = 22
 ```
 
 These will be located at the top of the file. Use `vim turret.py` to open the file. Press `i` to edit.
-Once you've made your changes, press `esc` then `ZZ` to save.
+Once you've made your changes, press `esc` then `ZZ` to save.