add python36 to travis
add python36 to travis

puppet-community/puppetboard,johnzimm/xx-puppetboard,mterzo/puppetboard,mterzo/puppetboard,grandich/puppetboard,mterzo/puppetboard,johnzimm/xx-puppetboard,johnzimm/puppetboard,johnzimm/puppetboard,johnzimm/xx-puppetboard,tparkercbn/puppetboard,grandich/puppetboard,stoyansbg/puppetboard,voxpupuli/puppetboard,stoyansbg/puppetboard,voxpupuli/puppetboard,stoyansbg/puppetboard,johnzimm/puppetboard,puppet-community/puppetboard,voxpupuli/puppetboard,johnzimm/xx-puppetboard,mterzo/puppetboard,tparkercbn/puppetboard,grandich/puppetboard,tparkercbn/puppetboard,puppet-community/puppetboard,tparkercbn/puppetboard,grandich/puppetboard