Update python versions in Travis config

Author: rshipp

.travis.yml

@@ -2,9 +2,9 @@ language: python
 python:
   - "2.6"
   - "2.7"
-  - "3.2"
   - "3.3"
   - "3.4"
+  - "3.5"
 install: 
   - "pip install -r requirements-testing.txt"
   - "pip install coveralls"