- no need to `npm install` by hand anymore 

...as of https://github.com/busterjs/buster-dev-tools/commit/c6360b9dabba1fc14345dfe0f3464fde6e50ca90

see also: https://github.com/busterjs/buster-docs/pull/6 and https://github.com/busterjs/buster-docs/pull/9