add missing async declaration
add missing async declaration

benjamn/babel,PolymerLabs/babel,CrocoDillon/babel,kaicataldo/babel,zjmiller/babel,claudiopro/babel,hulkish/babel,iamchenxin/babel,hulkish/babel,iamchenxin/babel,antn/babel,iamchenxin/babel,Skillupco/babel,chicoxyzzy/babel,zenparsing/babel,ccschneidr/babel,kedromelon/babel,kedromelon/babel,maurobringolf/babel,hzoo/babel,babel/babel,kedromelon/babel,jridgewell/babel,kellyselden/babel,AgentME/babel,ameyms/babel,mrtrizer/babel,DmitrySoshnikov/babel,chicoxyzzy/babel,hzoo/babel,garyjN7/babel,STRML/babel,claudiopro/babel,bcoe/babel,jchip/babel,PolymerLabs/babel,rmacklin/babel,kpdecker/babel,chicoxyzzy/babel,vhf/babel,kaicataldo/babel,kassens/babel,benjamn/babel,zertosh/babel,kellyselden/babel,existentialism/babel,hzoo/babel,hulkish/babel,antn/babel,claudiopro/babel,jridgewell/babel,krasimir/babel,dekelcohen/babel,ccschneidr/babel,kaicataldo/babel,samwgoldman/babel,AgentME/babel,jridgewell/babel,existentialism/babel,zenparsing/babel,fabiomcosta/babel,shuhei/babel,iamstarkov/babel,CrocoDillon/babel,PolymerLabs/babel,samwgoldman/babel,kpdecker/babel,jridgewell/babel,Skillupco/babel,kellyselden/babel,guybedford/babel,chicoxyzzy/babel,lxe/babel,babel/babel,samwgoldman/babel,rmacklin/babel,KunGha/babel,lxe/babel,guybedford/babel,ameyms/babel,kellyselden/babel,guybedford/babel,tikotzky/babel,jchip/babel,zjmiller/babel,shuhei/babel,iamstarkov/babel,babel/babel,mrtrizer/babel,hulkish/babel,Skillupco/babel,Industrial/babel,krasimir/babel,shuhei/babel,DmitrySoshnikov/babel,STRML/babel,zertosh/babel,garyjN7/babel,hzoo/babel,fabiomcosta/babel,tikotzky/babel,existentialism/babel,dekelcohen/babel,maurobringolf/babel,jhen0409/babel,Skillupco/babel,vadzim/babel,bcoe/babel,vhf/babel,maurobringolf/babel,kaicataldo/babel,dustyjewett/babel-plugin-transform-es2015-modules-commonjs-ember,vadzim/babel,KunGha/babel,Industrial/babel,jhen0409/babel,kassens/babel,babel/babel