Update the readme to reflect the new bindings for scrolling up/down a half page
Update the readme to reflect the new bindings for scrolling up/down a half page

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