fix: update links for newemails and website (#383)

CODE_OF_CONDUCT.md

@@ -19,6 +19,6 @@ By adopting this Code of Conduct, project maintainers commit themselves to fairl
 
 This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community.
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting a project maintainer at [electron@github.com](mailto:electron@github.com). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances. Maintainers are obligated to maintain confidentiality with regard to the reporter of an incident.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting a project maintainer at [coc@electronjs.org](mailto:coc@electronjs.org). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances. Maintainers are obligated to maintain confidentiality with regard to the reporter of an incident.
 
 This Code of Conduct is adapted from the Contributor Covenant, version 1.3.0, available from http://contributor-covenant.org/version/1/3/0/

CONTRIBUTING.md

@@ -6,7 +6,7 @@
 
 This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md).
 By participating, you are expected to uphold this code. Please report unacceptable
-behavior to [electron@github.com](mailto:electron@github.com).
+behavior to [coc@electronjs.org](mailto:coc@electronjs.org).
 
 **See the [documentation](docs.md) for information on how this project works.**
 

README.md

@@ -3,7 +3,7 @@
 [![Build Status](https://travis-ci.org/electron/electron-api-demos.svg?branch=master)](https://travis-ci.org/electron/electron-api-demos)
 [![JavaScript Standard Style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg?style=flat)](http://standardjs.com)
 
-This is a desktop app that interactively and with sample code demonstrates core features of the [Electron](http://electron.atom.io) API. It's built with Electron, too, of course. This app works on Windows, macOS and Linux operating systems.
+This is a desktop app that interactively and with sample code demonstrates core features of the [Electron](http://electronjs.org) API. It's built with Electron, too, of course. This app works on Windows, macOS and Linux operating systems.
 
 Use this app to see what you can do with Electron and use the source code to learn how to create a basic Electron app.
 
@@ -13,10 +13,10 @@ Use this app to see what you can do with Electron and use the source code to lea
 
 This project adheres to the Contributor Covenant [code of conduct](CODE_OF_CONDUCT.md).
 By participating, you are expected to uphold this code. Please report unacceptable
-behavior to electron@github.com.
+behavior to [coc@electronjs.org](mailto:coc@electronjs.org).
 
 Follow [@ElectronJS](https://twitter.com/electronjs) on Twitter for important
-announcements. Visit the [electron website](http://electron.atom.io).
+announcements. Visit the [electron website](http://electronjs.org).
 
 ## Using