fixed bug in travis config (#297)
fixed bug in travis config (#297)

* fixed bug in travis config

* trying one more thing with travis

* removed numpy and scipy binary installs

quantumlib/OpenFermion,jarrodmcc/OpenFermion,quantumlib/OpenFermion,jarrodmcc/OpenFermion,kevinsung/OpenFermion,kevinsung/OpenFermion,quantumlib/OpenFermion,kevinsung/OpenFermion