Update README.md

Author: RomanSoloweow

README.md

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 # SimpleStateMachineLibrary [![NuGet Pre Release](https://img.shields.io/nuget/vpre/SimpleStateMachineLibrary.svg)](https://www.nuget.org/packages/SimpleStateMachineLibrary) 
 A C# library for realization simple state-machine on .Net
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+## Give a Star! :star:
+If you like or are using this project please give it a star. Thanks!
 ## Сontent
 1. [Features](#Features)
 2. [Examples](#Examples)