Adding Ant Design that supports React 15.

It's set up to use babel-plugin-import which allows the build to import only the CSS and components from Ant Design that is used, and not the entire Ant Design library.

• yarn test
• yarn lint
• Storybook inspection of Logo which uses antd's grid system
• Tested use of antd's grid in Chart component and observed it working in if me application
• Observed that use of antd grid in Chart component only loaded CSS/JS for the grid components, and not the entire antd framework
• Reverted use of grid on Chart component (since I only needed to test it)

The Logo component was refactored to follow a factory pattern that passes flow and eslint.