Add definitions for git-remote-origin-url

[janslow]

Please fill in this template.

• Make your PR against the master branch.
• Use a meaningful title for the pull request. Include the name of the package modified.
• Test the change in your own code. (Compile and run.)
• Follow the advice from the readme.
• Avoid common mistakes.
• Run tsc without errors.
• Run npm run lint package-name if a tslint.json is present.

If adding a new definition:

• The package does not provide its own types, and you can not add them. (see Add TypeScript definitions sindresorhus/git-remote-origin-url#6)
• If this is for an NPM package, match the name. If not, do not conflict with the name of an NPM package.
• Create it with npm run new-package package-name, not by basing it on an existing project.
• tslint.json should be present, and tsconfig.json should have noImplicitAny, noImplicitThis, and strictNullChecks set to true.

[dt-bot]

git-remote-origin-url/index.d.ts

Checklist

• is correct naming convention?
  • https://www.npmjs.com/package/git-remote-origin-url - https://github.com/sindresorhus/git-remote-origin-url#readme
• has a test file? (git-remote-origin-url-tests.ts or git-remote-origin-url-tests.tsx)
• pass the Travis CI test?

[ghost]

Thanks!