fix failing Travis-CI build due to missing libgfortran #17

- noted on  travis-ci/travis-ci#4816 and identified as a problem with conda
  packages numpy and scipy for Python 2.7 (see conda/conda#444)
- need to use numpy 1.9.2 without MKL
  - conda/conda#444 (which was only fixed for 1.5.1, 1.6.2, 1.7.1, 1.8.2, 1.9.2)
  - See mila-iqia/blocks#836 : @bartvm suggests to disable MKL in numpy 1.9.2
    because the MKL version is still missing the libgfortran.so.1 dependency.
- also updated scipy to 0.16.0

.travis.yml

@@ -7,6 +7,7 @@ addons:
   apt:
     packages:
       - gfortran
+      - libgfortran3
       - liblapack-dev
       - libatlas-dev
 before_install:
@@ -16,7 +17,7 @@ before_install:
   - export PATH=/home/travis/miniconda/bin:$PATH
   - conda update --yes conda
 install:
-  - conda create --yes -q -n pyenv mkl python=$TRAVIS_PYTHON_VERSION numpy=1.9.1 scipy=0.14.0 nose=1.3.7 six sphinx=1.3
+  - conda create --yes -q -n pyenv python=$TRAVIS_PYTHON_VERSION numpy=1.9.2 scipy=0.16.0 nose=1.3.7 six sphinx=1.3
   - source activate pyenv
   - case "$TRAVIS_PYTHON_VERSION" in 2.*) SPECIAL_PACKAGES="mock";; 3.*) SPECIAL_PACKAGES="";; esac
   - pip install  coveralls $SPECIAL_PACKAGES