Update README.md

Author: Trojaner

README.md

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 # RocketMod.UnityEngine [![Build status](https://ci.appveyor.com/api/projects/status/i7wy89d2bbn5s48g?svg=true)](https://ci.appveyor.com/project/RocketMod/rocket-unityengine)
 Rocket.UnityEngine contains all UnityEngine specific implementations.
 
+Latest build (NuGet): ![Rocket.Core NuGet](https://img.shields.io/nuget/v/Rocket.UnityEngine.svg) 
+
+Latest stable (GitHub): 	![Rocket.Core GitHub Release](https://img.shields.io/github/release/RocketMod/UnityEngine.svg)
+
 ## Compiling
 Before compiling, copy `UnityEngine.dll` to /lib