Merge pull request #4592 from rtfd/humitos/travis/py3.6-tox

Run all our tests with Python 3.6 on Travis

Author: ericholscher

.travis.yml

@@ -7,14 +7,14 @@ env:
   - ES_VERSION=1.3.9 ES_DOWNLOAD_URL=https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-${ES_VERSION}.tar.gz
 matrix:
   include:
-    - python: 2.7
+    - python: 3.6
       env: TOXENV=docs
     - python: 3.6
       env: TOXENV=docs-lint
-    - python: 2.7
+    - python: 3.6
       env: TOXENV=lint
       script: tox
-    - python: 2.7
+    - python: 3.6
       env: TOXENV=eslint
 cache:
   directories: