update travis file
update travis file

griffithlab/regtools,tabbott/regtools,tabbott/regtools,griffithlab/regtools,gatoravi/regtools,tabbott/regtools,gatoravi/regtools,griffithlab/regtools,gatoravi/regtools,tabbott/regtools,griffithlab/regtools,gatoravi/regtools,gatoravi/regtools,griffithlab/regtools,tabbott/regtools,griffithlab/regtools