Adds initial tests for fitsheader script
Adds initial tests for fitsheader script

lpsinger/astropy,pllim/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,pllim/astropy,StuartLittlefair/astropy,saimn/astropy,dhomeier/astropy,bsipocz/astropy,lpsinger/astropy,DougBurke/astropy,stargaser/astropy,mhvk/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,MSeifert04/astropy,astropy/astropy,dhomeier/astropy,lpsinger/astropy,funbaker/astropy,larrybradley/astropy,stargaser/astropy,bsipocz/astropy,astropy/astropy,larrybradley/astropy,astropy/astropy,saimn/astropy,funbaker/astropy,mhvk/astropy,DougBurke/astropy,mhvk/astropy,bsipocz/astropy,saimn/astropy,pllim/astropy,saimn/astropy,larrybradley/astropy,StuartLittlefair/astropy,astropy/astropy,MSeifert04/astropy,MSeifert04/astropy,larrybradley/astropy,larrybradley/astropy,mhvk/astropy,StuartLittlefair/astropy,DougBurke/astropy,lpsinger/astropy,bsipocz/astropy,pllim/astropy,saimn/astropy,mhvk/astropy,lpsinger/astropy,StuartLittlefair/astropy,funbaker/astropy,MSeifert04/astropy,astropy/astropy,aleksandr-bakanov/astropy,DougBurke/astropy,stargaser/astropy,aleksandr-bakanov/astropy,pllim/astropy,stargaser/astropy,dhomeier/astropy,dhomeier/astropy,funbaker/astropy