docs(README): add FAQ section
docs(README): add FAQ section

Explain why hard links look like use more disk space
than they do.

pnpm/supi,pnpm/pnpm,pnpm/supi,rstacruz/pnpm,rstacruz/pnpm,pnpm/pnpm,pnpm/supi,pnpm/pnpm,rstacruz/pnpm