message: fix get started layout and update readme
diff: Thanks goes to these wonderful people:
  <p float="left">
  + <a href="https://github.com/stramel"><img src="https://avatars1.githubusercontent.com/u/855184?s=460&v=4" width="50" height="50" /></a>
  <a href="https://github.com/tknickman"><img src="https://avatars0.githubusercontent.com/u/2933988?s=460&v=4" width="50" height="50"></a>
  <a href="https://github.com/chrisparton1991"><img src="https://avatars0.githubusercontent.com/u/13063119?s=460&amp;v=4" width="50" height="50">
  </a>
  