updated travis.yml
updated travis.yml

kris-singh/pgmpy,palashahuja/pgmpy,kris-singh/pgmpy,abinashpanda/pgmpy,jhonatanoliveira/pgmpy,vivek425ster/pgmpy,liquidmetal/pgmpy,anaviltripathi/pgmpy,ankurankan/pgmpy,kislayabhi/pgmpy,kislayabhi/pgmpy,yashu-seth/pgmpy,pratyakshs/pgmpy,abinashpanda/pgmpy,sandeepkrjha/pgmpy,pgmpy/pgmpy,pgmpy/pgmpy,jhonatanoliveira/pgmpy,palashahuja/pgmpy,sandeepkrjha/pgmpy,anaviltripathi/pgmpy,khalibartan/pgmpy,yashu-seth/pgmpy,ankurankan/pgmpy,pratyakshs/pgmpy,khalibartan/pgmpy,liquidmetal/pgmpy,vivek425ster/pgmpy