install scipy for the nnet part.

.travis.yml

@@ -28,6 +28,7 @@ env:
   - PART="-e test_basic.py theano/tensor/tests"
 script:
   - "if [ `expr \"$PART\" : '.*sparse'` -gt \"0\" ]; then pip install scipy==0.8 --use-mirrors; fi"
+  - "if [ `expr \"$PART\" : '.*nnet'` -gt \"0\" ]; then pip install scipy==0.8 --use-mirrors; fi"
   - export THEANO_FLAGS=warn.ignore_bug_before=all,on_opt_error=raise,on_shape_error=raise
   - python --version
   - uname -a