Added Library JLINE

src/main/java/org/cametendo/YesNo.java

@@ -0,0 +1,17 @@
+package org.cametendo;
+public class YesNo {
+    public static boolean check(String input) {
+        switch (input) {
+            case "Y":
+                return true;
+            case "y":
+                return true;
+            case "":
+                return true;
+            case "n":
+                return false;
+            default:
+                return false; 
+        }
+    }
+}