add thinky typings

[claytonsilva]

Typings URL: https://github.com/xdevelsistemas/typings-thinky

Questions (for new typings):

• Does the README explain the purpose of the typings and have a link to the JavaScript project?
• Do the typings follow the source structure (e.g. index.js <-> index.d.ts)?
• Are they external or global modules according the source (e.g. see README sources)?

Change Summary (for existing typings):

Typings for thinky orm https://thinky.io/

[blakeembrey]

Projects under npm/ need to be written in external module format (not global). The main change required is that you don't wrap the project in declare module "thinky".