Replaced `it's` with `its`

According to this parameter's comment, it's unused but webpack-dev-server crashes without it. However, webpack-dev-server is running fine for me without this parameter.

* File headers BSD+Patents -> MIT

* BSD+Patents -> MIT

* Convert react-error-overlay to React

* Update compile-time error overlay to use react-error-overlay components

 * Refactor react-error-overlay components to container and presentational components.

 * Make the compile-time error overlay a part of react-error-overlay package.

 * Use react-error-overlay as dependency in react-dev-utils to show compile-time errors.

* Run Prettier

* Move the function name fix into StackFrame itself

* Fix clicking on source code snippet to open the code in editor

* Use exact objects + minor style tweak

* Don't linkify frames that don't exist on the disk

* Fix lint

* Consolidate iframe rendering logic

* Remove circular dependency between react-dev-utils and react-error-overlay

* Fix lint

* Fix decoupling of react-dev-utils and react-error-overlay by moving middleware

* Deduplicate identical errors

* Allow importing package.json

* Remove package.json import from App.js template

* fix importing package.json

* Rename variable to reflect path is relative to root

* Check for both package & package.json in ModuleScopePlugin

* Use regex to check relative path to package.json

* Strictly enforce package.json extension on scope plugin

* Add allowedPaths to ModuleScopePlugin ctor and use it to allow app package.json

* Remove package.json import from App.js template

* Add package.json to react-scripts/template, show package version and name in the template

* Remove import package.json from template

* Remove template/package.json and its references in code

* Update ModuleScopePlugin.js

* Update README.md

* Use oneOf to resolve correct loader

* Add html and json fallthrough again

* Use oneOf to resolve correct loader in dev

* Document file-loaders `js` exclusion

* Remove `jsx` from exclusion in prod config

* Update eslint-loader 1.7.1 -> 1.9.0

* Add eslintPath option

* Update eslint 3.19.0 -> 4.1.1

* Update peer dependencies

* Move eslintPath config to outside @remove-on-eject

* Fix external CSS imports

* Add external CSS import to integration test

* Fix assertion

* Better React Native Web support

* Adding better react-native-web support for jest testing

* Fix sourcemap directory organizing on Windows

* Update comments

Since `v2.2.1` of webpack the need for `ident` for complex options is no longer required. See

https://webpack.js.org/guides/migrating/#complex-options

* Added NamedModulesPlugin in webpack.config.dev.js

* Update webpack.config.dev.js

* Always resolve NODE_PATH

* Update env.js

* Webpack config typo

* Webpack config more typo

* Add module scope plugin

* Oops

* Add comments

* Check windows seps too

* More descriptive error

* Document it

* Ignore Moment.js locales by default

* Update README.md

* Adding postcss-flexbugs-fixes

Using postcss-flexbugs-fixes to fix all flexbug's issues.

* Adding flexbox: 'no-2009' to Autoprefixer

It will add flexbox prefixes only for final and IE versions of
specification.

* Support hoisting react-scripts

* require.resolve() loaders and configs

This makes it so that loaders and configs are resolved relative to the config rather than to the app. This seems to make more sense to me.

* Add custom eslint formatter

* Add formatter docs

* Update formatter docs

* Slightly tweak it

* Update README.md

* Browser sort is not stable

* Fix ordering of final message

* Register the warning capture

* Display only createElement warnings

* Use different method name

* Fix regression

* Ignore errors with only node_module files

* Ignore null files, too

* Revise count

* Revise warning

* Update overlay.js

* Add support for https://github.com/facebook/react/pull/9679

* Use absolute paths

* Trim path if it's absolute

* Make sure it's an absolute path

* Oops

* Tweak for new behavior

* Make it safer

* More resilient warnings

* Prettier output

* Fix flow

* ༼ つ ◕_◕ ༽つ stack-frame-overlay

* Fix linting

* Remove auto overlay

* Fix e2e

* Pull in the rest

* Appease flow

* Correct dep

* Remove old repo references

* Check flow on test

* Test overlay in e2e

* Add cross env

* Rename package

* Make sure it gets built post-install

* Update the README

* Remove extra builds now that there's a postinstall script

* Revert "Remove extra builds now that there's a postinstall script"

This reverts commit 8bf601db.

* Remove broken script

* Fix some dev ergo

* Define dev chunk names

Fixes #2046

* Add comment

* Fix importing npm linked libraries

* Update webpack.config.dev.js

* Update webpack.config.prod.js

* Fixes a silent crash when ejecting

* Delete unnecessary files

* Remove references to eslintrc in Webpack config

* Fix lint

* Correct ESLint CLI options

* mv create-react-app/index.js -> create-react-app/creteReactApp.js

* update to modern code style

* var -> cosnt

* set trailing-coma to es5 for prettier

* Whitelist files that can be embedded through url-loader

Change the current catch-all loader to use file-loader instead of
url-loader, and exclude common image file extensons. Add another url-loader
for images, configured identically to the original catch-all loader.

Part of issue #1293.

* Update tests to reflect change in loader config

* Integration test fix

* More CI fixes

* Work around broken loader-utils behaviour in integration tests

* Revise the documentation around file loading

* Documentation tweaks

* Docs tweak

* Update test now that webpack/loader-utils has been updated

* Update react-scripts to depend on babel-loader@7.0.0-alpha.2

* Bump deps