• Libraries update: markdownlint, lodash.values, husky
• When directory is provided, it recursively process all the *.md files (fix #1)
• Fix: incorrect Markdown is now output to stderr
• Reading configuration also from .markdownlint.json (see #3)
• Functional tests are added for linting correct and incorrect Markdown files
• Adding installation instructions in README
• Adding NodeJS 0.12 and 4.3 to Travis CI
• Refactoring and improvements