Please fill in this template.

• [ x ] Use a meaningful title for the pull request. Include the name of the package modified.
• [x ] Test the change in your own code. (Compile and run.)
• [ x ] Add or edit tests to reflect the change. (Run with npm test.)
• [ x ] Follow the advice from the readme.
• [ x ] Avoid common mistakes.
• [ x ] Run npm run lint package-name (or tsc if no tslint.json is present).

Adding a new definition:

• [ x ] The package does not provide its own types, and you can not add them.
• [ x ] If this is for an NPM package, match the name. If not, do not conflict with the name of an NPM package.
• [ x ] Create it with dts-gen --dt, not by basing it on an existing project.
• [ x ] tslint.json should be present, and tsconfig.json should have noImplicitAny, noImplicitThis, strictNullChecks, and strictFunctionTypes set to true.

dnssd package in https://www.npmjs.com/package/dnssd