Merge pull request maxpumperla#132 from shadiakiki1986/master

ci: travis build fix

.travis.yml

@@ -17,6 +17,7 @@ install:
   - pip install entrypoints
   - pip install tensorflow
   - pip install --only-binary=numpy,scipy numpy scipy
+  - pip install networkx==1.11
   - python setup.py install
   - pip install pytest pytest-cov pep8 pytest-pep8
 script: