doc: move the readme newcomers section

Move the newcomers section to be more noticeable to those who it will
be needed by.
Also removed some entries that are now effectively duplicates.
They are all in the above section.

PR-URL: #6681
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Minwoo Jung <jmwsoft@gmail.com>
Reviewed-By: Alexander Makarenko <estliberitas@gmail.com>

README.md

@@ -17,6 +17,13 @@ policies and releases are managed under an
 If you need help using or installing Node.js, please use the
 [nodejs/help](https://github.com/nodejs/help) issue tracker.
 
+## Resources for Newcomers
+
+* [Website](https://nodejs.org/en/)
+* [Contributing to the project](./CONTRIBUTING.md)
+* IRC (general questions): [#node.js on chat.freenode.net](https://webchat.freenode.net?channels=node.js&uio=d4)
+* IRC (node core development): [#node-dev on chat.reenode.net](https://webchat.freenode.net?channels=node-dev&uio=d4)
+
 ## Release Types
 
 The Node.js project maintains multiple types of releases:
@@ -116,16 +123,6 @@ the binary verification command above.
 See [BUILDING.md](BUILDING.md) for instructions on how to build
 Node.js from source.
 
-
-## Resources for Newcomers
-
-* [CODE_OF_CONDUCT.md](./CODE_OF_CONDUCT.md)
-* [CONTRIBUTING.md](./CONTRIBUTING.md)
-* [GOVERNANCE.md](./GOVERNANCE.md)
-* IRC (general questions): [#node.js on Freenode.net](https://webchat.freenode.net?channels=node.js&uio=d4)
-* IRC (node core development): [#node-dev on Freenode.net](https://webchat.freenode.net?channels=node-dev&uio=d4)
-* [nodejs/node on Gitter](https://gitter.im/nodejs/node)
-
 ## Security
 
 All security bugs in Node.js are taken seriously and should be reported by