Update documentation

src/main/java/org/goudham/me/Response.java

@@ -1,5 +1,22 @@
 package org.goudham.me;
 
+import org.goudham.me.api.entity.series.Series;
+import org.goudham.me.api.entity.waifu.Waifu;
+
+/**
+ * This is returned to the User when called by methods in {@link MyWaifuClient}
+ * <br>
+ * E.g {@link MyWaifuClient#getWaifu(Integer)}
+ * <br>
+ * Given a successful response, {@link #entity} will be populated with the requested entity.
+ * <br>
+ * No matter successful or unsuccessful response, {@link #responseCode} and {@link #responseBody}
+ * will be populated to ensure the user has all the information for debugging or extra information within
+ * the {@link #responseBody}
+ *
+ * @param <T> The type of entity to be returned. E.g {@link Waifu} or {@link Series}
+ *
+ */
 public class Response<T> {
     private T entity;
     private final Integer responseCode;