Merge pull request #46 from reportportal/update-python-version-for-travis

Update .travis.yml

Author: Dzmitry Humianiuk

.travis.yml

@@ -4,7 +4,6 @@ stages:
   if: tag IS present
 language: python
 python:
-  - "2.6"
   - "2.7"
   - "3.4"
   - "3.5"