A test case test_sbml_support.py which inturn calls to write moosewriteSBML...

A test case test_sbml_support.py which inturn calls to write moosewriteSBML which needs networkx which is added as a dependency for travis

moose-core/.travis.yml

@@ -27,7 +27,7 @@ before_script:
     - sudo apt-get install -qq libxml2-dev libbz2-dev
     - sudo apt-get install -qq libhdf5-serial-dev
     - sudo apt-get install -qq make cmake
-    - sudo apt-get install -qq  python-numpy python-matplotlib
+    - sudo apt-get install -qq  python-numpy python-matplotlib python-networkx
     - sudo apt-get install -qq  python3-numpy python3-matplotlib python3-dev
     - sudo apt-get install -qq libboost-all-dev
     - sudo apt-get install -qq libgsl0-dev