Only build Python2.7 on Travis for now
Only build Python2.7 on Travis for now

bslatkin/dpxdt,Medium/dpxdt,mabushadi/dpxdt,ygravrand/dpxdt,steven-hadfield/dpxdt,Medium/dpxdt,steven-hadfield/dpxdt,ygravrand/dpxdt,weeksghost/dpxdt,Medium/dpxdt,Medium/dpxdt,weeksghost/dpxdt,ygravrand/dpxdt,gBritz/dpxdt,gBritz/dpxdt,steven-hadfield/dpxdt,gBritz/dpxdt,gBritz/dpxdt,ygravrand/dpxdt,mabushadi/dpxdt,bslatkin/dpxdt,bslatkin/dpxdt,weeksghost/dpxdt,weeksghost/dpxdt,mabushadi/dpxdt,mabushadi/dpxdt,steven-hadfield/dpxdt,bslatkin/dpxdt