Added --exact option and fix a little English.
Added --exact option and fix a little English.

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