Add CI (#16)

* Add CI

* Update .travis.yml

Author: enricostano

.travis.yml

@@ -0,0 +1,13 @@
+---
+language: python
+python:
+  - "2.7"
+  - "3.6"
+services:
+  - docker
+install:
+  - pip install molecule docker
+script:
+  - molecule --version
+  - ansible --version
+  - molecule test