Added .NET 5.0 Docs

Author: DavidSuescunPelegay

docs/net-50/1.png

@@ -0,0 +1,9 @@
+# .NET 5.0 Guide
+
+If you want to develop a project using .NET 5.0 you'll need to follow this steps:
+
+* Install the latest Visual Studio 2019 version (16.6 or higher)
+* Enable preview version within Visual Studio (Tools > Options)
+![Image 1](https://github.com/DavidSuescunPelegay/jQuery-datatable-server-side-net-core/tree/master/docs/net-50/1.png)
+* Now you should see it
+![Image 2](https://github.com/DavidSuescunPelegay/jQuery-datatable-server-side-net-core/tree/master/docs/net-50/2.gif)