fixed types in package.json generated by bob init

[roothybrid7]

If you perform bob init, it's written lib/typescript/src/index.d.ts to types in package.json.
However, it's a different path that actually outputs TypeScript type definitions.

When you perform bob build, it will be output to lib/typescript/index.d.ts.

[satya164]

Hey! Thanks for the PR.

This path can actually change based on the project structure. I have added a template to generate a library which produces a path with src in it.

So it's up-to the maintainer to ensure that this path is correct. I have added a note mentioning it in the README.

In the future, I'd like add some lint task which can verify these things.