added missing directory argument.

Author: steenzout

tox.ini

@@ -23,7 +23,7 @@ deps =
 passenv = ANSIBLE_ASK_SUDO_PASS HOME LANG LC_ALL TRAVIS USER
 
 commands =
-    yamllint -c .yamllint.yml
+    yamllint -c .yamllint.yml .
     ansible-lint= . || true
     bash setup.sh
     bash travis.sh {posargs}