contributors: add Rui Fontes.

diff --git a/contributors.txt b/contributors.txt
index 5b193e2..5cb1715 100644 (file)
--- a/contributors.txt
+++ b/contributors.txt
@@ -129,3 +129,4 @@ Nicolai Svendsen
 Jorge Pérez\r
 Juan Pablo Martínez Cortés\r
 Marat Suleymanov\r
+Rui Fontes (Tiflotecnia, lda.)\r