readme md

unreal/README.md

@@ -2,6 +2,58 @@
 
 ## Overview
 
+Our SDK can be used together with [UnrealEngine](https://www.unrealengine.com/en-US). 
+It is **not** fully functional plugin but can be easly integrated into your project as a unreal module.
+
 ## How to setup
 
+First of all you have to clone this repository inside the `<UnrealProject>/Source/` directory. 
+We recommend to place it inside the `ThirdParty` one (create it if no present). 
+
+After that you have to compile desired option of the SDK. You can simple do it as follow:
+```sh
+make -C <option> -f <architecture>.mk pubnub_<implementation>.a 
+```
+
+for example:
+
+```sh
+make -C posix -f posix.mk pubnub_sync.a
+```
+
+After that you have to adjust `PubNubModule/PubNubModule.Build.cs` with selected options. 
+Just change `option`, `architecture` and `implementation` with the same values you used in compilation. 
+
+> Note that this step is temporary until we enchant our build system that is quite obsolete and need maintenance. We are aware of it.
+
+In the end you have to import module in your your project as follow:
+
+- `<UnrealProject>.Target.cs` and `<UnrealProject>Editor.Target.cs`
+```cs
+public class <UnrealProject>[Editor]Target : TargetRules
+{
+  public <UnrealProject>[Editor]Target (TargetInfo Target) : base(Target)
+  {
+    //...
+    ExtraModuleNames.Add("PubNubModule");
+  }
+}
+```
+
+- `<UnrealProject>.uproject`
+```json5
+{
+  //...
+  "Modules": [
+    //...
+    {
+      "Name": "PubNubModule",
+      "Type": "Runtime",
+      "LoadingPhase": "Default"
+    }
+  ],
+  //...
+}
+```
 
+Now generate the project files using your IDE and you're ready to go!