Force install of the new commit of Theano

.travis.yml

@@ -37,7 +37,7 @@ install:
   - ./.travis/travis_install.sh
   - source activate pyenv
   - if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then pip install pydot; else pip install pydot-ng; fi
-  - pip install . --no-deps
+  - pip install . --no-deps --upgrade
   - pip install flake8-future-import nose-parameterized==0.5.0 sphinx_rtd_theme
   # nose-exclude plugin allow us to tell nosetests to exclude folder with --exclude-dir=path/to/directory.
   - pip install nose-exclude