Added Daniel Rodríguez to contributors list

The date is the original when I tried to add myself at first instance.
2014-06-02 17:05:22 +02:00 · 2014-06-02 17:05:22 +02:00 · 9b3b08a176
commit 9b3b08a176
--- a/licenses/cla-individual.md
+++ b/licenses/cla-individual.md
@ -156,3 +156,6 @@ Tomohiro Miura, @pekopeko1, 2014/04/15
 Devin Weaver, @sukima, 2014/05/21

 Irene Knapp, @IreneKnapp, 2014/05/17
+
+Daniel Rodriguez Rivero, @danielo515, 2014/04/18
+