More cleanup and adds some helper functions to new utility classes

src/test/java/net/knarcraft/bookswithoutborders/GenenCryptTest.java

@@ -0,0 +1,17 @@
+package net.knarcraft.bookswithoutborders;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class GenenCryptTest {
+
+    @Test
+    public void encryptDecryptTest() {
+        GenenCrypt gc = new GenenCrypt("Another Key");
+        gc.printCodonTable();
+        String encrypted = gc.encrypt("Hello World!");
+        assertEquals("HELLO WORLD!", gc.decrypt(encrypted));
+    }
+
+}