Add script snippet to download/install DSR

README.md

@@ -2,9 +2,37 @@
 
 Helper for sharing video captured by NVidia Shadowplay in Discord.
 
-## Download
+## Download/Install
 
-Head to [the release page](https://git.mylloon.fr/Anri/dsr/releases/latest).
+2 choices :
+
+- Manually head to [the release page](https://git.mylloon.fr/Anri/dsr/releases/latest).
+- <details>
+      <summary>Download it via command lines</summary>
+
+  Copy and paste this snippet into the windows command prompt:
+
+  ```bash
+  PowerShell -Command "" ^
+    "$releases = 'https://git.mylloon.fr/api/v1/repos/Anri/dsr/releases/latest';" ^
+    "$link = (Invoke-WebRequest $releases | ConvertFrom-Json)[0].assets.browser_download_url;" ^
+    "$archive = 'dsr.zip';" ^
+    "$outfile = Join-Path -Path $env:TEMP -ChildPath $archive;" ^
+    "Invoke-WebRequest -Uri $link -OutFile $outfile;" ^
+    "cd $env:TEMP;" ^
+    "Expand-Archive -Path $archive -DestinationPath '%LOCALAPPDATA%\DSR' -Force;" ^
+    "Move-Item -Path '%LOCALAPPDATA%\DSR\dsr-win32-x64\*' -Destination '%LOCALAPPDATA%\DSR' -Force;" ^
+    "Remove-Item '%LOCALAPPDATA%\DSR\dsr-win32-x64';'" ^
+    "$WshShell = New-Object -comObject WScript.Shell;" ^
+    "$Shortcut = $WshShell.CreateShortcut('%APPDATA%\Microsoft\Windows\Start Menu\Programs\DSR.lnk');" ^
+    "$Shortcut.TargetPath = '%LOCALAPPDATA%\DSR\dsr.exe';" ^
+    "$Shortcut.Save();" ^
+    "REG ADD 'HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\dsr' /f /v DisplayName /t REG_SZ /d 'DSR';" ^
+    "REG ADD 'HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\dsr' /f /v InstallLocation /t REG_SZ /d '%LOCALAPPDATA%\DSR'"
+  ```
+
+  If you have nitro, add `/nitro` flag when running DSR.
+  </details>
 
 ## More info