in case the issue is as simple as an empty file at $MPLCONFIGDIR/matplotlibrc

Author: kbarnhart

.travis.yml

@@ -18,6 +18,8 @@ before_install:
     brew cleanup -s
     rm -rf $(brew --cache)
   fi
+- mkdir $MPLCONFIGDIR
+- touch $MPLCONFIGDIR/matplotlibrc
 install:
 - echo "Build on $TRAVIS_OS_NAME for Python $TRAVIS_PYTHON_VERSION"
 - |