Revert "Added a demo, where InterfaceScannerCLI.java is the generated CLI for the generator based on the interface InterfaceScanner.java. Yo dawg"

This reverts commit ed4ee8ae4f6b0f70e5bc0c69144aa726ed632552.
Made it so the program arguments so far must be written as: CLIGenerator <Class that implements interface>.java <The interface>.java
Edited the README file to have more details about the program
Still a bit unsure how git works, so i kinda made a new demo file :/ Oh well...