Update README.md

Author: scheibel

README.md

@@ -8,6 +8,8 @@ A C++ CMake Project Template
 [![Appveyor](https://img.shields.io/appveyor/ci/scheibel/cmake-init/master.svg?style=flat&logo=appveyor)](https://ci.appveyor.com/project/scheibel/cmake-init/branch/master)
 [![Tokei](https://tokei.rs/b1/github/cginternals/cmake-init)](https://github.com/Aaronepower/tokei)
 
+[![Setup Guide](https://img.shields.io/badge/setup%20guide-wiki-blue.svg?style=flat)](https://github.com/cginternals/cmake-init/wiki/Setup-Guide)
+
 cmake-init is a copy and paste template, that provides the following features:
  * Cross Platform
   * Windows