Update travis-ci build dependencies to include texinfo
diff --git a/.travis.yml b/.travis.yml
index 1a6a425..87d2e25 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,6 @@ compiler:
- gcc
- clang
-before_script: sudo apt-get install dejagnu
+before_script: sudo apt-get install dejagnu texinfo
script: ./configure && make && make check