[skip ci] babylon -> babel, ast -> parsedAst
[skip ci] babylon -> babel, ast -> parsedAst

align the naming, allow the example to be usable without change
STRML/babel,hulkish/babel,chicoxyzzy/babel,jridgewell/babel,shuhei/babel,claudiopro/babel,hulkish/babel,kellyselden/babel,hulkish/babel,PolymerLabs/babel,hzoo/babel,maurobringolf/babel,guybedford/babel,samwgoldman/babel,hzoo/babel,babel/babel,kedromelon/babel,kellyselden/babel,existentialism/babel,chicoxyzzy/babel,samwgoldman/babel,chicoxyzzy/babel,shuhei/babel,PolymerLabs/babel,vadzim/babel,hzoo/babel,claudiopro/babel,existentialism/babel,vadzim/babel,kedromelon/babel,hulkish/babel,hzoo/babel,jridgewell/babel,Skillupco/babel,guybedford/babel,PolymerLabs/babel,kedromelon/babel,samwgoldman/babel,STRML/babel,kaicataldo/babel,maurobringolf/babel,guybedford/babel,Skillupco/babel,jridgewell/babel,kellyselden/babel,kaicataldo/babel,existentialism/babel,Skillupco/babel,shuhei/babel,babel/babel,maurobringolf/babel,Skillupco/babel,kaicataldo/babel,babel/babel,kaicataldo/babel,jridgewell/babel,kellyselden/babel,chicoxyzzy/babel,claudiopro/babel,babel/babel