Added graphviz package to .travis.yml

SMFSW · SMFSW · commit 0cc27615f84b · 2018-05-04T17:21:06.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,11 @@
 language: c
 sudo: false
 
+addons:
+    apt:
+        packages:
+            - graphviz
+
 # Blacklist
 branches:
   except:
