Fix file structure according to other eggs

README.md

@@ -38,6 +38,7 @@ If you submit a PR without filling out the template I will deny it. This is for
 
 [Arma](/arma/)  
 * [Arma 3](/arma/arma3/)  
+* [Arma 3 HC](/arma/arma3_headless_client/)  
 
 [Conan Exiles](/conan_exiles/conan_exiles)
 

arma/arma3_headless_client/README.md

@@ -0,0 +1,20 @@
+# Arma 3 Headless Client
+### From their [Site](https://community.bistudio.com/wiki/Arma_3_Headless_Client)
+What is a Headless Client (HC) used for?
+* Headless Client is used to offload AI calculations from the server
+* Headless Client is integrated into game client and dedicated server executable (WIndows and Linux, use -client parameter)
+* The server doesn't allow arbitrary connections from headless clients if you do not define the headless clients IPs in the server.cfg,
+
+### But why?
+If you host an Arma 3 Server with lots of AI in it, the Server FPS will drop pretty fast. 
+Since the server files are only 32 Bit you will need some kind of magical assistant to prevent slow AI.
+
+### Minimum RAM warning
+This server requires about 2048m to run properly. ARMA 3 is more CPU intensive though.
+
+### Additional settings
+Additional server flags can be found [here](https://community.bistudio.com/wiki/Arma_3_Startup_Parameters).  
+This can help is you see the server using to many cores/threads on the server.
+
+### Server Ports
+Since this is basically a client, this Egg does not need a port.