Update shadowMethod option description.
Update shadowMethod option description.

wangjun/cow,wmydz1/cow,ymero/cow,tnndwc/cow,wmydz1/cow,libichong/cow,styxyang/cow,r3jack/cow,thanatoskira/cow,hbprotoss/cow,bitwing/cow,lioonline/cow,Zocalos/cow,garylgh/cow,ghmajx/cow,vcinly/cow,SwordYork/cow,lhslll/cow,cyfdecyf/cow,garylgh/cow,afdnlw/cow,SwordYork/cow,wangjun/cow,pjq/cow,soxfmr/cow,dochang/cow,chobitly/cow,mbbill/cow,Mattosx/cow,imWildCat/cow,hyqhyq3/cow,timesking/cow,jn7163/cow,Zocalos/cow,jn7163/cow,janstk/cow,r3jack/cow,ljyloo/cow,fflamingogo/cow,tnndwc/cow,juju2013/clever-cow,blog2i2j/cow,yu5611789/cow,yu5611789/cow,pmphxs/cow,remxcode/cow,ljyloo/cow,demon386/cow,vcinly/cow,heimonsy/cow,YoungGit/cow,qq205633/test,styxyang/cow,nickyfoto/cow,venuskira/cow,blog2i2j/cow,fflamingogo/cow,wongzigii/cow,WangYue7477/cow,sunclx/cow,afdnlw/cow,heimonsy/cow,nickyfoto/cow,Zocalos/cow,sunsan05/cow,venuskira/cow,demon386/cow,pjq/cow,xdsnet/cow,MummyDing/cow,timesking/cow,squallyan/cow,boneyao/cow,styxyang/cow,sunsan05/cow,menghan/cow,lioonline/cow,qq205633/test,janstk/cow,gccpacman/cow,pmphxs/cow,nickyfoto/cow,WangYue7477/cow,wangkechun/cow,fighterleslie/cow,beermix/cow,wangkechun/cow,ghmajx/cow,icetoggle/cow,thanatoskira/cow,dxq-git/cow,dochang/cow,wmydz1/cow,imWildCat/cow,Mattosx/cow,fighterleslie/cow,lhslll/cow,cyfdecyf/cow,ghmajx/cow,soxfmr/cow,bitwing/cow,fflamingogo/cow,SwordYork/cow,thanatoskira/cow,wangkechun/cow,beermix/cow,ymero/cow,wongzigii/cow,mbbill/cow,lioonline/cow,YoungGit/cow,icetoggle/cow,chobitly/cow,pmphxs/cow,chobitly/cow,gccpacman/cow,venuskira/cow,dxq-git/cow,MummyDing/cow,heimonsy/cow,soxfmr/cow,TangTaigang/cow,boneyao/cow,antmanler/MEOW,icetoggle/cow,WangYue7477/cow,bitwing/cow,itplanes/MEOW,sunsan05/cow,r3jack/cow,antmanler/MEOW,sinuos/cow,TangTaigang/cow,squallyan/cow,remxcode/cow,blog2i2j/cow,cyfdecyf/cow,Mattosx/cow,YoungGit/cow,imWildCat/cow,lhslll/cow,timesking/cow,itplanes/MEOW,MummyDing/cow,boneyao/cow,antmanler/MEOW,sunclx/cow,wongzigii/cow,tnndwc/cow,afdnlw/cow,demon386/cow,xdsnet/cow,ljyloo/cow,ymero/cow,libichong/cow,squallyan/cow,hyqhyq3/cow,yu5611789/cow,garylgh/cow,remxcode/cow,wangjun/cow,hbprotoss/cow,libichong/cow,hbprotoss/cow,jn7163/cow,beermix/cow,pjq/cow,sinuos/cow,TangTaigang/cow,vcinly/cow,sinuos/cow,menghan/cow,dochang/cow,sunclx/cow,menghan/cow,hyqhyq3/cow,fighterleslie/cow,janstk/cow,qq205633/test,dxq-git/cow,xdsnet/cow,mbbill/cow,gccpacman/cow,itplanes/MEOW