Restore and clean up example in docstring
Restore and clean up example in docstring

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