Update travis.yml
Update travis.yml

vcflib/vcflib,vcflib/vcflib,ekg/vcflib,ekg/vcflib,vcflib/vcflib,vcflib/vcflib,ekg/vcflib,vcflib/vcflib,vcflib/vcflib,vcflib/vcflib,ekg/vcflib,ekg/vcflib,vcflib/vcflib