Add python-statsmodels to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1375
Add python-statsmodels to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1375

Packages: python-statsmodels python-statsmodels-lib python-statsmodels-doc python-scikits.statsmodels

travis-ci/apt-package-whitelist,travis-ci/apt-package-whitelist