- Correct pip install.

.travis.yml

@@ -4,7 +4,7 @@ python: "2.7"
 sudo: false
 
 install:
-  - pip install -r tests/requirements.yml
+  - pip install -r tests/requirements.txt
   - ansible-galaxy install git+file://$(pwd),$(git rev-parse --abbrev-ref HEAD) -p .molecule/roles
   - molecule dependency