docs: add info about iexpress into readme

README.md

@@ -19,7 +19,10 @@ The script already has pragmas with needed libraries set up, so in case of `cl`,
 I am not sure if there's a way to do it with `g++`. It's better to just download VS Build Tools & roll in with that.
 
 ## Distributing
-For now, you need to provide an executable and a video file in the same directory. However, I am planning to release a packed version with both files in one executable, using `iexpress`.
+You can pack the video file and the main script together using `iexpress`, with the provided SED file, containing all of the settings:
+```sh
+iexpress /Q /N iexpress.sed
+```
 
 ## The video
 The original video comes from [Mario Teaches Typing 2](https://www.mariowiki.com/Mario_Teaches_Typing_2), the exact source is from ["Mario Head Collection"](https://www.youtube.com/watch?v=9tQWLg4E90M&t=30s) on Youtube.