Added two more items into README limitations section.
Added two more items into README limitations section.

jmptrader/disque,gideonairex/disque,c2j/disque,lamby/disque,hanicker/disque,felixbuenemann/disque,mopuri-sandeep/disque,antirez/disque,tempbottle/disque,gideonairex/disque,sunheehnus/disque,themage/disque,GrimDerp/disque,Koed00/disque,jmptrader/disque,c2j/disque,CodyReichert/disque,hanicker/disque,lamby/pkg-disque,themage/disque,felixbuenemann/disque,themage/disque,jmptrader/disque,GrimDerp/disque,seppo0010/disque,ErikDubbelboer/disque,chen-tian/disque,lamby/pkg-disque,antirez/disque,Koed00/disque,douxiaozhao/disque,lamby/disque,tempbottle/disque,CodyReichert/disque,mopuri-sandeep/disque,ErikDubbelboer/disque,chen-tian/disque,douxiaozhao/disque,seppo0010/disque,sunheehnus/disque