Updated to README re: target frameworks [SkipCI]

Author: merbla

README.md

@@ -3,7 +3,7 @@
 [![Build status](https://ci.appveyor.com/api/projects/status/yt40wg34t8oj61al?svg=true)](https://ci.appveyor.com/project/serilog/serilog-sinks-splunk) ![NuGet Version](https://buildstats.info/nuget/Serilog.Sinks.Splunk) 
  [![Join the chat at https://gitter.im/serilog/serilog](https://img.shields.io/gitter/room/serilog/serilog.svg)](https://gitter.im/serilog/serilog)
 
-A Serilog sink that writes events to the [Splunk](https://splunk.com). Supports .NET 4.5+, .NET Core, and platforms compatible with the [.NET Platform Standard](https://github.com/dotnet/corefx/blob/master/Documentation/architecture/net-platform-standard.md) 1.1 including Windows 8 & UWP, Windows Phone and Xamarin.
+A Serilog sink that writes events to the [Splunk](https://splunk.com). Supports .NET 4.5+, .NET Core, and platforms compatible with the [.NET Platform Standard](https://docs.microsoft.com/en-us/dotnet/standard/net-standard) `net45`, `netstandard1.1`, `netstandard2.0`.
 
 [![Package Logo](https://serilog.net/images/serilog-sink-nuget.png)](https://nuget.org/packages/serilog.sinks.splunk)
 
@@ -64,8 +64,8 @@ If using `appsettings.json` for configuration the following example illustrates
 More information about Serilog is available on the [wiki](https://github.com/serilog/serilog-sinks-splunk/wiki).
 ### Build status
 
-Branch  | AppVeyor | Travis
-------------- | ------------- |-------------
+Branch  | AppVeyor 
+------------- | ------------- 
 master |  [![Build status](https://ci.appveyor.com/api/projects/status/yt40wg34t8oj61al/branch/master?svg=true)](https://ci.appveyor.com/project/serilog/serilog-sinks-splunk/branch/master) 
 dev | [![Build status](https://ci.appveyor.com/api/projects/status/yt40wg34t8oj61al/branch/dev?svg=true)](https://ci.appveyor.com/project/serilog/serilog-sinks-splunk/branch/dev)