Replace python 3.2 with 3.6 in the list of tested python versions

- Our main dependency, requests, is no longer compatible with 3.2
  - Neither are pip and virtualenv

Author: aiham

.travis.yml

@@ -2,10 +2,10 @@ language: python
 python:
 - '2.6'
 - '2.7'
-- '3.2'
 - '3.3'
 - '3.4'
 - '3.5'
+- '3.6'
 install:
 - pip install -r test_requirements.txt
 - pip install -r requirements.txt