Added arm to match statement for waranty in main

Added an arm to the match statement for parsing flags in main.

Using the pattern and hopefully ongoing convention of making
unimplemented arms indicated by using the unimplemented!() macro.

Signed-off-by: Christina Sørensen <christina@cafkafk.com>

src/main.rs

@@ -37,6 +37,7 @@ fn main() {
     let config = Config::new(&args.config);
     match &args {
         args if args.license == true => unimplemented!(),
+        args if args.warranty == true => unimplemented!(),
         args if args.code_of_conduct == true => unimplemented!(),
         _ => (),
     }