* Readme: add Travis-CI badge so people can easily see there is tests

Following https://twitter.com/MoOx/status/776008513252392960

* Readme: add Travis-CI badge so people can easily see there is tests, round 2

* Document testing

* Update README.md

* Update README.md

* Clarify our recommendations on testing

* Okay, that was too much. :-)

* Add a few more things

* Add a more prominent link to the guide

As a contributor, I know where to find the documentation/guide since
know the codebase, but I've seen people miss the link to it in the
README, because it's not very prominent. Let's try to make it more
discoverable by including a link to it right on top of the page.

* Make the wording of links more obvious

* Rename the "How Do I...?" section to "User Guide" for consistency

Shameless plug of course.

If you want hot reloading and the best DX experience (friendly errors, desktop notifications, decorators, very fast reload times with dlls...) you should really check out [The Awsesom REact Cli](https://github.com/geowarin/tarec) (tarec).

I have used it in numerous projects that now run in production and I continue to make it better day after day with a lot of love 

Typescript and SSR are on the roadmap!

Thanks for create-react-app, it's an awesome project and a great source of inspiration 

Adds the [`dev-toolkit` npm package](https://github.com/stoikerty/dev-toolkit) to the list of Alternatives.

After some suggestions in my last PR https://github.com/facebookincubator/create-react-app/pull/292, I've changed my project to provide better command-line utilities for initializing an app. Managed to get rid of babel's dev-dependencies as well, so this is now a dependency-free project just like `create-react-app`.

Add aik as possible alternative for create-react-app

* Move setup instructions to CONTRIBUTING.md

* Reword setup instructions slightly

Quik is a tool to prototype and build apps with React and Babel with zero-setup. It also supports HMR, CSS modules, Sass etc.

https://github.com/satya164/quik

* Use a custom eslint rule list

* Sort rules

* Relax some rules