Added section on installing the snap

Thanks for making VS Codium. Now the codium snap is available in the stable channel of the snap store, I added a section to the README.md so people can find it. I also added a badge at the top which shows what build is current in the snap store, and the build status.

README.md

@@ -12,6 +12,8 @@
 [![build status](https://travis-ci.com/VSCodium/vscodium.svg?branch=master)](https://travis-ci.com/VSCodium/vscodium) 
 [![license](https://img.shields.io/github/license/VSCodium/vscodium.svg)](https://github.com/VSCodium/vscodium/blob/master/LICENSE)
 [![Gitter](https://img.shields.io/gitter/room/vscodium/vscodium.svg)](https://gitter.im/VSCodium/Lobby)
+[![codium](https://snapcraft.io//codium/badge.svg)](https://snapcraft.io/codium)
+[![codium](https://snapcraft.io//codium/trending.svg?name=0)](https://snapcraft.io/codium)
 
 </div>
 
@@ -22,6 +24,7 @@
   - [Install with Brew](#install-with-brew)
   - [Install with Chocolatey](#install-with-choco)
   - [Install with Scoop](#install-with-scoop)
+  - [Install with snap](#install-with-snap)
   - [Install with Package Manager](#install-with-package-manager)
   - [Install on Arch Linux](#install-on-arch-linux)
   - [Flatpak Option](#flatpak)
@@ -55,6 +58,13 @@ scoop bucket add extras
 scoop install vscodium
 ```
 
+#### <a id="install-with-snap"></a>Install with snap (Linux)
+VSCodium is available in the [Snap Store](https://snapcraft.io/) as [Codium](https://snapcraft.io/codium), published by the [Snapcrafters](https://github.com/snapcrafters/codium) community.
+If your Linux distribution has support for [snaps](https://snapcraft.io/docs/installing-snapd):
+```bash
+snap install codium
+```
+
 #### <a id="install-with-package-manager"></a>Install with Package Manager (Linux)
 You can always install using the downloads (deb, rpm, tar) on the [releases page](https://github.com/VSCodium/vscodium/releases), but you can also install using your favorite package manager and get automatic updates. [@paulcarroty](https://github.com/paulcarroty) has set up a repository with instructions [here](https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo). Any issues installing VSCodium using your package manager should be directed to that repository's issue tracker.