Count download of GitHub release module.

GitHubCounter.cs

using Newtonsoft.Json.Linq;
using System;
using System.Net.Http;
using System.Linq;
using System.Threading.Tasks;

public static class GitHubCounter
{
    public static async Task CountDownload(string owner, string repository)
    {
        using (var httpClient = new HttpClient())
        {
            httpClient.DefaultRequestHeaders.Add("User-Agent", "C# HttpClient");

            var downloadCount =
                JArray
                    .Parse(await httpClient.GetStringAsync($"https://api.github.com/repos/{owner}/{repository}/releases"))
                    .SelectMany(x => JArray.FromObject(x["assets"]))
                    .Sum(x => int.Parse((string)x["download_count"]));
            Console.WriteLine(downloadCount);
        }
    }

}