add travis and python requirements

.travis.yml

@@ -0,0 +1,10 @@
+sudo: required
+services:
+  - docker
+language: python
+python:
+  - "2.7"
+install:
+  - pip install -r requirements.txt
+
+script: py.test -vv

requirements.txt

@@ -0,0 +1,5 @@
+docker-compose
+pytest
+pytest-xdist
+pytest-cov
+testinfra