Install Cython in Travis CI

Author: rth

.travis.yml

@@ -29,7 +29,7 @@ install:
   # create the testing environment
   - conda create -n testenv --yes python=$PYTHON_VERSION pip
   - source activate testenv
-  - conda install --yes numpy==$NUMPY_VERSION scipy==$SCIPY_VERSION scikit-learn==$SKLEARN_VERSION nose pytest pytest-cov
+  - conda install --yes numpy==$NUMPY_VERSION scipy==$SCIPY_VERSION scikit-learn==$SKLEARN_VERSION cython nose pytest pytest-cov
   - pip install codecov
   - pip install .