updated travis config

.travis.yml

@@ -17,7 +17,7 @@ before_install:
 - sudo add-apt-repository -y ppa:biometrics/bob
 - sudo apt-get update -qq                                           
 - sudo apt-get install -qq --force-yes libboost-all-dev libblitz1-dev libjpeg8-dev libnetpbm10-dev libpng12-dev libtiff4-dev libgif-dev libhdf5-serial-dev libgif-dev libmatio-dev 
-- sudo apt-get install -qq --force-yes python-opencv libcv-dev libcvaux-dev libopencv-dev
+- sudo apt-get install -qq --force-yes python-opencv libcv-dev libcvaux-dev libopencv-dev libvl-dev texlive-latex-base texlive-latex-extra texlive-math-extra texlive-latex-recommended texlive-fonts-recommended
 - if [ -n "${NUMPYSPEC}" ]; then sudo apt-get install -qq --force-yes libatlas-dev libatlas-base-dev liblapack-dev gfortran; fi
 - if [ -n "${NUMPYSPEC}" ]; then pip install --find-links http://wheels.astropy.org/ --find-links http://wheels2.astropy.org/ --use-wheel numpy$NUMPYSPEC; fi
 - pip install --find-links http://wheels.astropy.org/ --find-links http://wheels2.astropy.org/ --use-wheel numpy sphinx nose==1.3.0 jinja2==2.6 pygments==1.6 coveralls