Add missing license headers

Author: jknack

modules/jooby-ebean/src/main/java/io/jooby/ebean/TransactionalRequest.java

@@ -1,3 +1,8 @@
+/**
+ * Jooby https://jooby.io
+ * Apache License Version 2.0 https://jooby.io/LICENSE.txt
+ * Copyright 2014 Edgar Espina
+ */
 package io.jooby.ebean;
 
 import io.ebean.Database;