Added instructions on setting up affiliated package manually
Added instructions on setting up affiliated package manually

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