Use install instead

- I did document this; I guess that last build was a demo on what goes
  wrong.

.travis.yml

@@ -43,7 +43,8 @@ before_install:
 
 install:
   - pip install nose coverage flake8
-  - python setup.py develop
+  # must be install, due to calmjs being namespace and package
+  - python setup.py install
 script:
   - flake8 setup.py src
   - nosetests --with-coverage --cover-package=calmjs.bower --with-doctest