changes

src/main/java/com/zipcoder/payment/CreditCard.java

@@ -0,0 +1,4 @@
+package com.zipcoder.payment;
+
+public class CreditCard {
+}

src/main/java/com/zipcoder/payment/Payment.java

@@ -0,0 +1,9 @@
+package com.zipcoder.payment;
+
+public interface Payment {
+
+    Long getID();
+    String getPayerName();
+    String getShortDescription();
+    
+}

src/test/java/com/zipcoder/payment/CreditcardTest.java

@@ -0,0 +1,4 @@
+package com.zipcoder.payment;
+
+public class CreditcardTest {
+}