Add note about np.savetxt format to CommentedHeader
Add note about np.savetxt format to CommentedHeader

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