Update markdownlint-cli to the latest version 🚀

[greenkeeper]

The devDependency markdownlint-cli was updated from 0.13.0 to 0.14.0.

This version is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

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Release Notes for 0.14.0

• Update markdownlint dependency to 0.12.0
• Automatically use .markdownlint.yaml/.markdownlint.yml (as with .markdownlint.json)
• Add Dockerfile for use with Docker
• Allow arrays for custom rules

Commits

The new version differs by 8 commits.

• 9d689eb Bump version 0.14.0
• 794b4bb Add Node.js version 11 to .travis.yml.
• c3ae338 Allow .markdownlint.yaml/.markdownlint.yml as with .markdownlint.json (fixes #50).
• 61c8fba Upgrade 'markdownlint' dependency, add "package-lock.json" (#51)
• ecc342a Configuration is stored in JSON, YAML or INI files (#48)
• 8c7e07f added dockerfile (#47)
• bb29251 Allow custom rules to export an array of custom rule objects.
• 8eadb9f Resolve new xo violation: "The catch parameter should be named error.".

See the full diff

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