Update README.md

Update example project

Merge pull request #2 from ya332/dependabot/npm_and_yarn/acorn-6.4.1

Bump acorn from 6.4.0 to 6.4.1

Fix import statement

Add maintainability badge

Move webpack-server dependency from bundle

Spaces between badges

Bump version to v0.7.0

Add buy me coffee tag

Update README.md