add jinja2 module.

Author: rouilj

.travis.yml

@@ -107,6 +107,7 @@ install:
   - if [[ $TRAVIS_PYTHON_VERSION != "3.4"* ]]; then pip install mysqlclient; fi
   - pip install psycopg2
   - pip install gpg pytz whoosh pyjwt requests
+  - pip install jinja2
   - pip install pytest-cov codecov
   - pip install beautifulsoup4
   - if [[ $TRAVIS_PYTHON_VERSION != "3.4"* ]]; then pip install docutils; fi