* Update eslint-plugin-react and enable new rules

New rules:
* `react/no-danger-with-children` (yannickcr/eslint-plugin-react#710)
* `react/no-find-dom-node` (yannickcr/eslint-plugin-react#678)
* `react/style-prop-object` (yannickcr/eslint-plugin-react#715)

* Remove react/no-find-dom-node for now

* Move ESLint configuration to a separate package

* Remove the ESLint configuration, moved to eslint-config-react-app

* Update ESLint instructions

* Pin the package versions in eslint-config-react-app

* Add a README for eslint-config-react-app

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update package.json

* Update package.json

* Update production eslint-loader config

* Add the ESLint config to devDependencies of the repo

Resolves an issue that can occur in certain situations that causes a build error when user has CDed into an incorrectly cased directory.

* Specify cache directory for babel loader

* Use `react-scripts` for folder name instead

tagging dev-only code (@remove-on-publish-begin/end) and pre-eject-only code (@remove-on-eject-begin/end) #257 (#257)

This makes generators work with Jest.

Fixes #255.
Replaces #262.

Fixes #532

* Update Jest

* Remove default snapshot test

* Fix a few things

* Add a simple default test

* App.spec.js -> App.test.js

* Fix e2e test

* Bump Jest

* Started using babel-preset-latest

* Updated babel dependencies

* Remove redundant babel-plugin-syntax-async-functions

* Disabled redundant regenerator transform

* Load favicon through html-loader.

Fixes #291.

* Add test for *.ico in e2e test suite

* Configure html-loader to process <link href="...">

* Address feedback on html-loader inclusion.

* Place favicon.ico at the root of the build dir

* Make comment style consistent between prod and dev webpack configs

* Fix html-loader config in dev mode

Ref #387

Fixes #391

* Creating a new app in the current directory

* Fixed style mistakes

This allows users to avoid CORS in simple projects that are hosted on the same server as backend.

* Transform async functions with regenerator

Remove `transform-async-to-generator`, which to my understanding is meant
to be used in environments that support generators natively.

Because we're compiling generators to ES5 anyway, we can simply use
`regenerator` to transform async functions too, which results in
slightly simpler output and only uses the regenerator runtime instead
regenerator runtime + _asyncToGenerator Babel helper.

* Add babel-plugin-transform-regenerator

* Use dependencies with an exact version