Update .travis.yml

Author: gamdow

.travis.yml

@@ -8,7 +8,7 @@ before_install:
   - bash miniconda.sh -b -p $HOME/miniconda
   - export PATH=/home/travis/miniconda/bin:$PATH
 install:
-  - conda create -q -y -n magnics-test -c conda-forge python=$TRAVIS_PYTHON_VERSION fenics pytest nbval
+  - conda create -q -y -n magnics-test -c conda-forge python=$TRAVIS_PYTHON_VERSION fenics pytest scipy nbval
   - source activate magnics-test
 
 # command to run tests