Fix #38

Author: Juan Carlos

.travis.yml

@@ -19,6 +19,7 @@ script:
     - wget --no-check-certificate https://maxcdn.bootstrapcdn.com/bootstrap/latest/css/bootstrap.css
     - $TRAVIS_BUILD_DIR/css-html-js-minify.py --prefix temp_ --timestamp --wrap --hash --beep $TRAVIS_BUILD_DIR/bootstrap.css
     - python setup.py bdist_egg bdist_wheel --universal sdist --formats=zip
+    - python setup.py zipapp
     - python3 -m unittest $TRAVIS_BUILD_DIR/tests/test_*
     # - pip install --upgrade --no-compile css-html-js-minify