readme - add grunt task
readme - add grunt task

https://github.com/sindresorhus/grunt-6to5
tav/mu-babel,Jabher/babel,pixeldrew/babel,ianmstew/babel,pingjiang/babel,hulkish/babel,jmptrader/babel,rektide/babel-repl,samwgoldman/babel,tricknotes/babel,sairion/babel,thejameskyle/babel,kevhuang/babel,paulcbetts/babel,ywo/babel,cartermarino/babel,babel/babel,rmacklin/babel,benjamn/babel,vjeux/babel,jmm/babel,kellyselden/babel,CrabDude/babel,jeffmo/babel,DmitrySoshnikov/babel,arthurvr/babel,ysmood/babel,jridgewell/babel,jmm/babel,e-jigsaw/babel,hubli/babel,Skillupco/babel,abdulsam/babel,ortutay/babel,victorenator/babel,kaicataldo/babel,paulcbetts/babel,hryniu555/babel,jchip/babel,mcanthony/babel,jmptrader/babel,rn0/babel,mcanthony/babel,arthurvr/babel,jeffmo/babel,KualiCo/babel,TheAlphaNerd/babel,zorosteven/babel,lxe/babel,nightire/babel,dariocravero/babel,kaicataldo/babel,Mark-Simulacrum/babel,hughsk/babel,cgvarela/babel,abdulsam/babel,lastjune/babel,manukall/babel,forivall/babel,Industrial/babel,vadzim/babel,KualiCo/babel,bcoe/babel,cgvarela/babel,hzoo/babel,ameyms/babel,codenamejason/babel,andrejkn/babel,fabiomcosta/babel,sethcall/babel,jmptrader/babel,samwgoldman/babel,koistya/babel,gxr1020/babel,ianmstew/babel,pingjiang/babel,Industrial/babel,beni55/babel,rn0/babel,cartermarino/babel,kevinb7/6to5,andrewwilkins/babel,jridgewell/babel,KunGha/babel,ywo/babel,maurobringolf/babel,sejoker/babel,ming-codes/babel,AgentME/babel,Dignifiedquire/babel,johnamiahford/babel,moander/babel,jackmew/babel,sdiaz/babel,jridgewell/babel,fabiomcosta/babel,SaltTeam/babel,ysmood/babel,pixeldrew/babel,tikotzky/babel,pixeldrew/babel,chicoxyzzy/babel,moander/babel,megawac/babel,prathamesh-sonpatki/babel,drieks/babel,aalluri-navaratan/babel,claudiopro/babel,SaltTeam/babel,maurobringolf/babel,kevhuang/babel,pingjiang/babel,vhf/babel,iamolivinius/babel,samwgoldman/babel,zenlambda/babel,jhen0409/babel,STRML/babel,KualiCo/babel,kedromelon/babel,steveluscher/babel,loganfsmyth/babel,sdiaz/babel,michaelficarra/babel,iamchenxin/babel,aalluri-navaratan/babel,cartermarino/babel,victorenator/babel,mrmayfield/babel,cesarandreu/6to5,vipulnsward/babel,mquandalle/6to5,zenparsing/babel,shuhei/babel,macressler/babel,lydell/babel,nmn/babel,mayflower/babel,greyhwndz/babel,greyhwndz/babel,CrocoDillon/babel,victorenator/babel,douglasduteil/babel,azu/babel,chicoxyzzy/babel,amasad/babel,tikotzky/babel,lxe/babel,megawac/babel,plemarquand/babel,greyhwndz/babel,kedromelon/babel,drieks/babel,luca-barbieri/5to6,kellyselden/babel,babel/babel,stefanpenner/6to5,lastjune/babel,koistya/babel,hzoo/babel,kellyselden/babel,KunGha/babel,andrewwilkins/babel,manukall/babel,inikulin/babel,aalluri-navaratan/babel,kaicataldo/babel,macressler/babel,Jeremy017/babel,forivall-old-repos/tacoscript-babel-shared-history,nishant8BITS/babel,james4388/babel,benjamn/babel,framewr/babel,casser/babel,ramoslin02/babel,existentialism/babel,kevhuang/babel,sairion/babel,codenamejason/babel,amasad/babel,mrtrizer/babel,jaredly/babel,claudiopro/babel,SaltTeam/babel,nvivo/babel,hryniu555/babel,forivall/babel,ccschneidr/babel,zertosh/babel,e-jigsaw/babel,Victorystick/babel,lydell/babel,Jeremy017/babel,chengky/babel,guybedford/babel,prathamesh-sonpatki/babel,spicyj/babel,ErikBaath/babel,jchip/babel,zorosteven/babel,mcanthony/babel,mgcrea/babel,sethcall/babel,grasuxxxl/babel,ellbee/babel,STRML/babel,CrabDude/babel,ezbreaks/babel,framewr/babel,vhf/babel,Jeremy017/babel,VukDukic/babel,rmacklin/babel,guybedford/babel,jhen0409/babel,chicoxyzzy/babel,PolymerLabs/babel,douglasduteil/babel,ajcrites/babybel,hubli/babel,1yvT0s/babel,thorikawa/babel,tav/mu-babel,loganfsmyth/babel,ianmstew/babel,andrewwilkins/babel,ramoslin02/babel,michaelficarra/babel,gxr1020/babel,thejameskyle/babel,sairion/babel,forivall/babel,shuhei/babel,abdulsam/babel,krasimir/babel,ramoslin02/babel,jackmew/babel,mrapogee/babel,ErikBaath/babel,amasad/babel,Dignifiedquire/babel,antn/babel,zenparsing/babel,nmn/babel,mgcrea/babel,dekelcohen/babel,hawkrives/6to5,maurobringolf/babel,inikulin/babel,sejoker/babel,lastjune/babel,hzoo/babel,gxr1020/babel,1yvT0s/babel,azu/babel,ming-codes/babel,jnuine/babel,ameyms/babel,iamchenxin/babel,sejoker/babel,PolymerLabs/babel,dekelcohen/babel,spicyj/babel,Jabher/babel,steveluscher/babel,rwjblue/babel,samccone/babel,ajcrites/babybel,nmn/babel,hubli/babel,beni55/babel,TheAlphaNerd/babel,ezbreaks/babel,Mark-Simulacrum/babel,kedromelon/babel,TheAlphaNerd/babel,mayflower/babel,Dignifiedquire/babel,hulkish/babel,Skillupco/babel,tricknotes/babel,claudiopro/babel,megawac/babel,krasimir/babel,ryankanno/babel,andrejkn/babel,andrejkn/babel,inikulin/babel,ellbee/babel,mayflower/babel,iamstarkov/babel,zorosteven/babel,ming-codes/babel,vjeux/babel,vipulnsward/babel,drieks/babel,codenamejason/babel,ezbreaks/babel,jeffmo/babel,antn/babel,michaelficarra/babel,beni55/babel,Mark-Simulacrum/babel,dariocravero/babel,paulcbetts/babel,macressler/babel,ortutay/babel,cgvarela/babel,loganfsmyth/babel,chengky/babel,mrtrizer/babel,AgentME/babel,ywo/babel,plemarquand/babel,ysmood/babel,framewr/babel,zenlambda/babel,zjmiller/babel,prathamesh-sonpatki/babel,jridgewell/babel,existentialism/babel,vadzim/babel,nvivo/babel,mrapogee/babel,garyjN7/babel,PolymerLabs/babel,CrabDude/babel,Skillupco/babel,kevinb7/6to5,james4388/babel,iamolivinius/babel,CrocoDillon/babel,tricknotes/babel,rn0/babel,Skillupco/babel,douglasduteil/babel,steveluscher/babel,ccschneidr/babel,jackmew/babel,chicoxyzzy/babel,vjeux/babel,jnuine/babel,goatslacker/babel,guybedford/babel,iamchenxin/babel,hzoo/babel,zertosh/babel,ErikBaath/babel,kpdecker/babel,grasuxxxl/babel,jaredly/babel,iamolivinius/babel,babel/babel,moander/babel,casser/babel,james4388/babel,kassens/babel,grasuxxxl/babel,koistya/babel,ortutay/babel,mgcrea/babel,1yvT0s/babel,kellyselden/babel,manukall/babel,dariocravero/babel,sethcall/babel,tav/mu-babel,thorikawa/babel,shuhei/babel,jnuine/babel,mrmayfield/babel,kassens/babel,Victorystick/babel,cesarandreu/6to5,e-jigsaw/babel,johnamiahford/babel,rektide/babel-repl,DmitrySoshnikov/babel,iamstarkov/babel,VukDukic/babel,plemarquand/babel,babel/babel,gaearon/6to5,nishant8BITS/babel,kaicataldo/babel,zjmiller/babel,chengky/babel,kpdecker/babel,dustyjewett/babel-plugin-transform-es2015-modules-commonjs-ember,mrapogee/babel,hulkish/babel,cesarandreu/6to5,existentialism/babel,ajcrites/babybel,forivall-old-repos/tacoscript-babel-shared-history,ryankanno/babel,luca-barbieri/5to6,johnamiahford/babel,spicyj/babel,bcoe/babel,rwjblue/babel,Victorystick/babel,VukDukic/babel,garyjN7/babel,hulkish/babel,zenlambda/babel,samccone/babel,thorikawa/babel,ryankanno/babel,vipulnsward/babel