Merge pull request #12 from jayvdb/rnd_pip_7_1

pyexcel rnd_requirements requires pip 7.1

Author: chfw

templates/travis.yml.jj2

@@ -22,7 +22,7 @@ before_install:
 {% block custom_install %}
 {% endblock%}
   - if [[ -f rnd_requirements.txt ]]; then
-      pip install --upgrade "setuptools==17.1" ;
+      pip install --upgrade "setuptools==17.1" "pip==7.1" ;
       pip install -r rnd_requirements.txt ;
     fi
   - pip install -r tests/requirements.txt