Added logging docs

Logging.md

@@ -1 +1,126 @@
-WIP
+The library offers extensive logging, for which you can supply your own logging implementation. The logging can be configured via the client options (see XXX).
+
+Logging is based on the `Microsoft.Extensions.Logging.ILogger` interface. This should provide ease of use when trying to connect the library logging to your existing log implementation.
+
+### Serilog
+To make the CryptoExchange.Net logging write to the Serilog logger you can use the following ways, depending on the type of project you're using. The following examples assume that the `Serilog.Sinks.Console` package is already installed.
+
+#### ASP.NET Core/Blazor
+With an ASP.Net Core or Blazor project, make sure to install the `Serilog.AspNetCore` package (https://github.com/serilog/serilog-aspnetcore). Adding `UseSerilog` will add the serilogger implementation as an ILogger which you can inject into implementations.
+
+*Configuring Serilog as ILogger:*
+````C#
+
+public static void Main(string[] args)
+{
+	Log.Logger = new LoggerConfiguration()
+		.MinimumLevel.Debug()
+		.WriteTo.Console()
+		.CreateLogger();
+
+	CreateHostBuilder(args).Build().Run();
+}
+
+public static IHostBuilder CreateHostBuilder(string[] args) =>
+	Host.CreateDefaultBuilder(args)
+		.UseSerilog()
+		.ConfigureWebHostDefaults(webBuilder =>
+		{
+			webBuilder.UseStartup<Startup>();
+		});
+				
+````
+
+
+*Injecting ILogger:*
+````C#
+
+public class BinanceDataProvider
+{
+	BinanceClient _client;
+
+	public BinanceDataProvider(ILogger<BinanceDataProvider> logger)
+	{
+		_client = new BinanceClient(new BinanceClientOptions
+		{
+			LogLevel = LogLevel.Trace,
+			LogWriters = new List<ILogger> { logger }
+		});
+
+	}
+}
+
+````
+
+#### Console application
+If you don't have a dependency injection service available because you are for example working on a simple console application you use a slightly different approach.  
+
+*Configuring Serilog as ILogger:*
+````C#
+var serilogLogger = new LoggerConfiguration()
+	.MinimumLevel.Debug()
+	.WriteTo.Console()
+	.CreateLogger();
+
+var loggerFactory = (ILoggerFactory)new LoggerFactory();
+loggerFactory.AddSerilog(serilogLogger);
+
+````
+
+*Injecting ILogger:*
+````C#
+
+var client = new BinanceClient(new Binance.Net.Objects.BinanceClientOptions
+{
+	LogLevel = LogLevel.Trace,
+	LogWriters = new List<ILogger> { logger }
+});
+````
+
+The `BinanceClient` will now use the Serilog logger.
+
+### Log4Net
+To make the CryptoExchange.Net logging write to the Serilog logger you can use the following ways, depending on the type of project you're using.
+
+#### ASP.NET Core/Blazor
+
+With an ASP.Net Core or Blazor project, make sure to install the `Microsoft.Extensions.Logging.Log4Net.AspNetCore` package (https://github.com/huorswords/Microsoft.Extensions.Logging.Log4Net.AspNetCore). 
+Adding `AddLog4Net` will add the Log4Net implementation as an ILogger which you can inject into implementations. Make sure you have a log4net.config configuration file in your project.
+
+*Configuring Log4Net as ILogger:*
+````C#
+public static IHostBuilder CreateHostBuilder(string[] args) =>
+	Host.CreateDefaultBuilder(args)
+		.ConfigureWebHostDefaults(webBuilder =>
+		{
+			webBuilder.ConfigureLogging(logging =>
+			{
+				logging.AddLog4Net();
+				logging.SetMinimumLevel(LogLevel.Trace);
+			});
+			webBuilder.UseStartup<Startup>();
+		});
+````
+
+*Injecting ILogger:*
+````C#
+
+public class BinanceDataProvider
+{
+	BinanceClient _client;
+
+	public BinanceDataProvider(ILogger<BinanceDataProvider> logger)
+	{
+		_client = new BinanceClient(new BinanceClientOptions
+		{
+			LogLevel = LogLevel.Trace,
+			LogWriters = new List<ILogger> { logger }
+		});
+
+	}
+}
+
+````
+
+#### Console application
+TODO

Options.md

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+WIP