Add downloading verifying steps in readme

README.md

@@ -1,7 +1,22 @@
 # Cinny desktop
+
+<a href="https://github.com/cinnyapp/cinny-desktop/releases">
+  <img alt="GitHub release downloads" src="https://img.shields.io/github/downloads/cinnyapp/cinny-desktop/total?style=social"></a>
+
 Dekstop app of Cinny made with Tauri. Cinny is a matrix client focusing primarily on simple, elegant and secure interface.
+
 ![Image](resources/screenshot2.png)
 
+## Download
+
+Installers for macOS, Windows and Linux can be downloaded from [Github releases](https://github.com/cinnyapp/cinny-desktop/releases). Releases are signed with a [Ed25519](https://ed25519.cr.yp.to/) public-key.
+
+Decoded pulic key:
+> RWRflTUQD3RHFtn25QNANCmePR9+4LSK89kAKTMEEB4OKpOFpLMgc64z
+
+To verify you need to download [minisign tool](https://jedisct1.github.io/minisign/) and decode the .sig file before running:
+>  minisign -Vm RELEASE_FILE.msi.zip -P RWRflTUQD3RHFtn25QNANCmePR9+4LSK89kAKTMEEB4OKpOFpLMgc64z -x SINGATURE.msi.zip.sig
+
 ## Local development
 
 Firstly, to setup Rust, NodeJS and build tools follow [Tauri documentation](https://tauri.studio/docs/getting-started/prerequisites).
@@ -17,4 +32,4 @@ To build the app locally, run:
 * `npm run tauri build`
 
 To start local dev server, run:
-* `npm run tauri dev`
+* `npm run tauri dev`