updated gem description
updated gem description

changjiashuai/dryrun,MaTriXy/dryrun,honeyflyfish/dryrun,leasual/dryrun,augmify/dryrun,Rowandjj/dryrun,MyFavoriteFork/dryrun,agile6v/dryrun,tsdl2013/dryrun,bensonss/dryrun,cesarferreira/dryrun,devsoulwolf/dryrun,McFlurry8/dryrun,Shedings/dryrun,rikarumi/dryrun,wangmingjob/dryrun,Darin726/dryrun,ivan-leschinsky/dryrun,xiDaiDai/dryrun