Package Electron apps

Create installers on different platforms:

• OSX: .dmg
• Windows: .exe
• Linux: .AppImage, .snap and .deb

Usage

• Download the binary https://github.com/Parity-JS/shell/releases
• Run latest parity
• Double-click on the installed app

More manual way:

• Clone this branch
• npm run package
• Run latest parity
• Double-click on the correct binary inside dist/ folder

Note

There are three tools to bundle Electron apps: electron-builder, electron-packager and electron-forge. Forge is boilerplate+tooling+everything to kickstart an app, we don't need that since we already have the app. A quick benchmark between -builder & -packager makes me prefer builder (better doc, more features, more community), so I went with it.