* Break out Installation into top-level doc section
* Update navigation (prev/next, nav tree)
- Move Installation section to top
- Add next/prev to install pages
* add links to other install options from try react page
* fix markdown link
* Clarify that Quick Start and Install are optional "next steps"
* Add top-level CDN page
This is useful for Codepen and other Unpkg-y setups
* Add link to Tutorial from Try React
* Update CRA link in tutorial
* Make Try React subheader a proper sentence
* Add "minimal"
* Explain local dev setup is more work than Codepen etc
* Fix typos
* Add : between headings
* add note that CRA is not lightweight
* fix typo
* Update add-react-to-a-new-app.md
* Update add-react-to-a-new-app.md
* Remove the Bower note
* Update try-react.md
* Tweak wording
* Use direct link
Maybe I'm somehow weird, but I lived for some time with an idea that `React.Component` does implement `shouldComponentUpdate` with deep comparison. `React.PureComponent` is faster because it compares shallowly.
The changes I propose should avoid this "implicit" kind of way of thinking, since it would explicitly state that `React.Component` does not compare anything.
The "Browser Support" section of react-dom indicates that IE9 and above
is supported, but fails to note that the support does require additional
polyfills in some cases. A link is added to the javascript environment
docs which already explains the polyfills required (Map, Set and rAF).
A post-merge comment for the original PR for this section mentioned that not all libs actually extract static stylesheets (and docs shouldn't explain implementation details of 3rd party libs unnecessarily, as a rule)