"subway" by itself is not a proper noun

* Add link to VS Code troubleshooting guide

* Update README.md

Fixed a small grammatical issue that I noticed while browsing the README today

* Change template manifest start_url to dot to make it react-router friendly

* Revert "Change template manifest start_url to dot to make it react-router friendly"

This reverts commit 02f53e81.

* Add a note about PWA manifest and client-side routing

instead of using `&&` to run multiple commands in `package.json`, guide users to use `npm-run-all`

This resolves #3272.

It's confusing: https://mobile.twitter.com/brianleroux/status/923581596720013312

h/t @brianleroux

The existing link lands on a 'this page has moved' placeholder that
doesn't redirect to the correct location. This PR replaces it with the
currently working URL.

Closes #3291

Correct manual proxy documentation

* Class fields to stage 3

Per 2017.07.27 TC39
https://github.com/tc39/proposals/commit/0bbbb08c3cdcc986d59b21782b70633329546042

* Be explicit that only the public part of the unified field proposal is available.

* Debugging in WebStorm

* Fixed formatting for shortcuts

* Added note about default URL

The service was rebranded to xervo.io and was completely shut down in April 2017

Fixing a small typo.

* format UglifyJs error

* move formatBuildError to react-dev-utils

* fix readme

* use regex for plucking the path from stack

* make path human readable and fallback to show error if regex not matched

* rename to printBuildError and add link to the docs

* fix link indentation

* improve readibility + shorten link

Closes #2713

* Docs for react-router v4 basename feature

Fix https://github.com/facebookincubator/create-react-app/issues/2593

* Update README.md

* Update README.md

* Update README.md

* Update README.md

Glob support has been added in source-map-explorer@1.4+

"Styleguidist combines of a style guide, ..." --> "Styleguidist combines a style guide, ..."

* Add more info about apache client side routing

After a revelation in https://github.com/facebookincubator/create-react-app/issues/2593#issuecomment-311729534

* Update README.md

* Add json and css to lint-staged in template README

This changes the proposed way about using prettier inside the README.md, because prettier supports css since the 1.4.0 release and json since the 1.5.0 release. 

Was not sure if it was a good idea to add different regexes for json and css inside the README.md don't have a real opinion about it myself, could maybe easier for starters to do so if they wan't to add things like eslint or stylelint the the commit hooks.

* Use capitalization for Javascript, CSS and JSON

* Change 'Javascript to JavaScript'

* Minor code style edits to user guide

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Don't ask to install webpack for using Styleguidist

* Update README.md

* Added instruction on how to install Prettier

* Tweak style

* Update README.md

* Update README.md

* Support JSX

* Update README.md

* Update README.md

In the section about npm run build fails in troubleshooting added more
info about memory usage of the build script and a link to a tutorial for
adding more swap space as a viable solution.

* Update docs with WebSocket proxy information

* Tweak wording