Update README

README.md

@@ -216,8 +216,8 @@ This is the least demanding option as you don't have to install enything on your
 
 <img src="images/Code_Space_1.png" width=700 />
 
-5. Open `Makefile`
-1. Edit build options, save `Makefile` changes
+5. Open `Makefile`, edit build options and save changes
+1. If necessary, open `compile-with-docker.sh`, edit build versions and save changes
 1. Run in terminal window
     - `./compile-with-docker.sh bandscope` to compile bandscope version
     - `./compile-with-docker.sh broadcast` to compile broadcast version