leverage package.json typings for dist d.ts file (#4)
leverage package.json typings for dist d.ts file (#4)

* leverage package.json typings for dist d.ts file

Requires TS 1.6+. This change will allow TS to auto-detect
the d.ts file for users who npm install this lib.

* undo changes to d.ts file

jiaweihli/monapt,jiaweihli/monapt