fix: restore fsl

this test now takes about 6.5 minutes because of the need to download fsl and afni packages

Author: satra

.travis.yml

@@ -12,7 +12,8 @@ before_install:
     - sudo apt-get install -qq python-scipy python-nose
     - sudo apt-get install -qq python-networkx python-traits python-setuptools
     - sudo apt-get install -qq python-nibabel
-    - sudo apt-get install -qq afni
+    - sudo apt-get install -qq fsl afni
+    - source /etc/fsl/fsl.sh
     - virtualenv --system-site-packages ~/virtualenv/this
     - source ~/virtualenv/this/bin/activate
 install: python setup.py build_ext --inplace