Fix 'Program doesnt close when saying i dont want to flash a image'

.gitignore

@@ -36,3 +36,4 @@ hs_err_pid*
 .project
 .settings/
 .vscode/
+PKGBUILD

src/main/java/org/cametendo/Greeting.java

@@ -6,7 +6,13 @@ public class Greeting {
     public static void greeting(Scanner UserInput) {
         System.out.println("Welcome to cflash!");
         System.out.println("Would you like to flash an image (Y/n)");
-        UserInput.nextLine();
+        String input = UserInput.nextLine();
+		if (YesNo.check(input)) {
+			System.out.println("Please choose the to be flashed device (f. e. sda)");
+		} else {
+			System.out.println("Canceling...");
+			System.exit(0);
+		}
 
     }
 }