Update readme file.

mo-esmp · web-flow · commit c44c9299f817 · 2020-04-10T21:04:08.000+04:30
diff --git a/README.md b/README.md
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 # Dynamic Role-Based Authorization in ASP.NET Core 2.0
+To view code sample for below description switch to [master branch](https://github.com/mo-esmp/DynamicRoleBasedAuthorizationNETCore/tree/master).
+
 You already know how role-based authorization wokrs in ASP.NET Core.
 
 ```c#
