* Add custom eslint formatter

* Add formatter docs

* Update formatter docs

* Slightly tweak it

* Update README.md

* Temp rename

* Rename to change the case

* extract generic build functions to react-dev-utils

* tweak package json files and move removeFileNameHash

* revert removeFileNameHash

* use paths.appBuild in printFileSizes

* use paths.appBuild in removeFileNameHash

* change curried functions to regular functions

* add fs-extra to react-dev-utils deps

* move getDifferenceLabel inside printFileSizes

* inline copyPublicFolder

* combine printFileSizes and removeFileNameHash to fileSizeReporter

* fix typo

* Tweak APIs and fix issues

* Fix heading

* Remove missing file

* Newline

* Newline

* Trailing space

* Update FileSizeReporter.js

* Update build.js

* Add note for using CHOKIDAR_USEPOLLING in virtual machines to enable HMR

* Use br in react-scripts template README md

* Use br in md for new line breaks

* Update troubleshooting HMR to allow for VMs running Windows

* Fix up the instructions

Array.forEach is passed the following parameters:

currentValue
    The current element being processed in the array.
index
    The index of the current element being processed in the array.
array
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach

console.log takes multiple arguments. We only want to print the first one, the actually message.

* add logging of existing port process on start

* Move port process wording in start command on to next line

* Color the named processes as cyan in terminal output

* Add handling for multiple processes on a part

- With the currently process filtering, if multiple processes are returned as running on port 3000, this command would fail. This splits apart the process IDing and the process naming, to support multiple processes.
- One curious thing about the bash command to get processes, is that it'll include browsers with a window open on localhost:3000. May want to reconsider that.

* Add process directory to existing port warning

- also moved terminal coloring up, when getting the process, to be able to distinguish the process command from the directory

* Change output color to all cyan, except "in"

* Rename getProcessNameOnPort -> getProcessForPort

- better reflects its broadened scope (both command and directory)

*...

* Add syntax error overlay in development

* Support HMR being disabled

* Tweak CSS

* Extract some utilities into a separate package

* Add utils dir to `files` in package.json

* Do not create an empty `utils` dir on eject