Support tsd/dtsm's link function
Support tsd/dtsm's link function

`tsd` and `dtsm` support discovery and linking of typescript definitions from packages installed with `npm` or `bower`.
To enable this function, this commit adds some metadata to `package.json`.

For more detail information, [please see the README of tsd](https://github.com/DefinitelyTyped/tsd#link-to-bundled-definitions)
saneyuki/option-t.js,saneyuki/option-t.js