try debug travis

Author: rflamary

.travis.yml

@@ -17,9 +17,10 @@ before_install:
 install:
  - pip install -r requirements.txt
  - pip install flake8 pytest
- - python setup.py install
+ - pip install .
 # command to run tests + check syntax style
 script:
+ - python setup.py develop
  - flake8 examples/ ot/ test/
  - python -m py.test -v test/
  # - py.test ot test