Added documentation link to readme

README.md

@@ -14,6 +14,7 @@ applications.
 
 External library dependencies are kept to a minimum to facilitate maintenance and ensure long-term viability.
 
+**Documentation in the [Wiki section](https://github.com/samuelgfeller/slim-example-project/wiki)**.
 
 <details>
   <summary><h2>Installation guide</h2></summary>
@@ -311,4 +312,4 @@ I cannot recommend it enough.
 
 The MIT Licence (MIT). Please
 see the [Licence File](https://github.com/samuelgfeller/slim-example-project/blob/master/LICENCE.txt) 
-for more information.
+for more information.