Merge pull request #272 from framoshernandez/patch-1

Update free-programming-books-es.md

free-programming-books-es.md

@@ -29,6 +29,8 @@
 ###Java
 
 * [Arquitectura Java Sólida](http://www.arquitecturajava.com/)
+* [Tutorial básico de Java EE](http://www.javahispano.org/storage/contenidos/JavaEE.pdf) (PDF)
+* [Tutorial Introducción a Maven 3](http://www.javahispano.org/storage/contenidos/Tutorial_de_Maven_3_Erick_Camacho.pdf) (PDF)
 
 ###Python