Add pypy back to .travis.yml
Add pypy back to .travis.yml

because Travis fixed their PyPy issues -- see
https://github.com/travis-ci/travis-ci/issues/512#issuecomment-6046816

hhatto/autopep8,vauxoo-dev/autopep8,Vauxoo/autopep8,MeteorAdminz/autopep8,hhatto/autopep8,SG345/autopep8,vauxoo-dev/autopep8,SG345/autopep8,MeteorAdminz/autopep8,Vauxoo/autopep8