message: Lower logo sizes in README
diff: <p align="center">
  <a href="https://github.com/davidcetinkaya/embla-carousel">
  - <img src="https://rawgit.com/davidcetinkaya/embla-carousel/master/docs/assets/javascript-logo.svg" height="50" alt="JavaScript" />
  + <img src="https://rawgit.com/davidcetinkaya/embla-carousel/master/docs/assets/javascript-logo.svg" height="45" alt="JavaScript" />
  </a>
  &nbsp;
  <a href="https://github.com/davidcetinkaya/embla-carousel-react">
  - <img src="https://rawgit.com/davidcetinkaya/embla-carousel/master/docs/assets/react-logo.svg" height="50" alt="React" />
  + <img src="https://rawgit.com/davidcetinkaya/embla-carousel/master/docs/assets/react-logo.svg" height="45" alt="React" />
  </a>
  </p>
  </div>
  