Enable travis to run tests

Fixes #151.

Pull request: #154

Author: kokosing

.travis.yml

@@ -0,0 +1,14 @@
+language: python
+python:
+  - "2.7"
+sudo: required
+services:
+  - docker
+env:
+  - TEST_SUITE=tests.product.slider
+  - TEST_SUITE=tests.product
+install: 
+  - pip install --upgrade pip==6.1.1
+  - pip install -r requirements.txt
+script: 
+  - make clean lint docs test-all