Added some language cleanup and clarifications.
Added some language cleanup and clarifications.

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