Added code-based generation and vendoring section to `vendoring.md` (#34)
Added code-based generation and vendoring section to `vendoring.md` (#34)

Added code-based generation and vendoring section to `vendoring.md`
goadesign-jp/goa.design,goadesign/goa.design,goadesign-jp/goa.design,goadesign/goa.design,goadesign/goa.design,goadesign-jp/goa.design