Added job on Travis with minimal dependencies
Added job on Travis with minimal dependencies

lpsinger/astropy,lpsinger/astropy,mhvk/astropy,saimn/astropy,saimn/astropy,StuartLittlefair/astropy,lpsinger/astropy,larrybradley/astropy,astropy/astropy,aleksandr-bakanov/astropy,mhvk/astropy,larrybradley/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,pllim/astropy,astropy/astropy,StuartLittlefair/astropy,pllim/astropy,astropy/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,saimn/astropy,dhomeier/astropy,dhomeier/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,dhomeier/astropy,dhomeier/astropy,mhvk/astropy,astropy/astropy,pllim/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,mhvk/astropy,StuartLittlefair/astropy,saimn/astropy,mhvk/astropy,saimn/astropy,astropy/astropy,pllim/astropy,larrybradley/astropy,pllim/astropy