Modified travis.yml for gitter integration.
Modified travis.yml for gitter integration.

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