[vx] fix all eslint errors + warnings, add missing propTypes. fixes #10

[hshoff]

fixes: #10

💥 Breaking Changes

• [vx] there's a possibility that new prop type checks might not be as care free as before

🚀 Enhancements

• [vx] add missing propTypes to all components

🏠 Internal

• [vx] add .eslintrc
• [vx] fix all eslint errors + warnings

I'm turning off a number of eslint rules from the airbnb config to match the style of the codebase as of now. Not going to add the lint check to the test script for now. Will probably add it in the future.