docs for .net core 3

Author: ignatandrei

README.md

@@ -21,7 +21,28 @@ Sample Project is TestBlocklyHtml from this repository
 
 # How to install NETCore2Blockly in a .NET Core 3.1  WebAPI / MVC application in 2 steps + run application
 
-Use the package with version 3.* . More instructions ASAP
+##  Step 1
+Install-Package Swashbuckle.AspNetCore -Version 5.6.3
+Install-Package NetCore2Blockly -Version 3.2022.224.16
+
+## Step 2
+
+```csharp
+ app.UseDefaultFiles();
+ app.UseStaticFiles();
+ app.UseSwagger();
+ //code
+ app.UseBlocklyUI(env);
+app.UseEndpoints(endpoints =>
+{
+    endpoints.MapControllers();
+    endpoints.UseBlocklyAutomation();
+});
+```
+ 
+## Run application
+
+Run the application from VS and browse to  /BlocklyAutomation/ or /BlocklyAutomation/index.html
 
 # How to install NETCore2Blockly in a .NET Core 5  WebAPI / MVC application in 2 steps + run application
 
@@ -61,6 +82,10 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
 }
 ```
 
+## Run application
+
+Run the application from VS and browse to  /BlocklyAutomation/ or /BlocklyAutomation/index.html
+
 # How to install NETCore2Blockly in a .NET Core 6  WebAPI / MVC application in 2 steps + run application
 
 ## Step 1: