edit test for travis to not use the DoubleExponentialDiskPotential
edit test for travis to not use the DoubleExponentialDiskPotential

followthesheep/galpy,jobovy/galpy,followthesheep/galpy,followthesheep/galpy,jobovy/galpy,jobovy/galpy,jobovy/galpy,followthesheep/galpy