Add Matthew Cline to CREDITS.
Add Matthew Cline to CREDITS.

douglas-larocca/vimium,jb55/vimium-plus,poacher2k/vimium,crazypenguincode/vimium,gdh1995/vimium,wildeyes/vimium,willsALMANJ/vimium,elderbas/vimium,cyrixhero/vimium,PrestanceDesign/vimium,Lw-Cui/vimium,csmalin/vimium,PrestanceDesign/vimium,borgified/vimium,douglas-larocca/vimium,wildeyes/vimium,crazypenguincode/vimium,elderbas/vimium,wildeyes/vimium,douglas-larocca/vimium,hhsue/vimium,poacher2k/vimium,smblott-github/vimium-smblott,dimatter/vimium,cyrixhero/vimium,PickRelated/vimium,shaung/vimium,philc/vimium,zhangmin510/vimium,csmalin/vimium,borgified/vimium,csmalin/vimium,Robinson10240/vimium,gdh1995/vimium,elegantwww/vimium,mrmr1993/vimium,willsALMANJ/vimium,gdh1995/vimium,smblott-github/vimium,Aleroniponi/vimium,decaffeinate-examples/vimium,justalittlenoob/vimium,decaffeinate-examples/vimium,decaffeinate-examples/vimium,smblott-github/vimium,justalittlenoob/vimium,smblott-github/vimium-smblott,PickRelated/vimium,bkudria/vimium,PrestanceDesign/vimium,Robinson10240/vimium,jb55/vimium-plus,bkudria/vimium,zhangmin510/vimium,elderbas/vimium,tuchangwei/vimium,poacher2k/vimium,VPashkov/vimium,smblott-github/vimium,Lw-Cui/vimium,VPashkov/vimium,philc/vimium,Lw-Cui/vimium,zhangmin510/vimium,tuchangwei/vimium,hhsue/vimium,elegantwww/vimium,mrmr1993/vimium,Aleroniponi/vimium,cyrixhero/vimium,Aleroniponi/vimium,llimllib/vimium,mrmr1993/vimium,hhsue/vimium,borgified/vimium,VPashkov/vimium,tuchangwei/vimium,Robinson10240/vimium,willsALMANJ/vimium,PickRelated/vimium,elegantwww/vimium,dimatter/vimium,dimatter/vimium,justalittlenoob/vimium,philc/vimium,bkudria/vimium