Wrote integration guides for UE4 and UE5

documentation/StandaloneIntegrationGuide.md

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+This guide will show you how to integrate Squid::Tasks into a standalone Visual Studio-based C++ project.
+
+Including the Headers
+-------------------
+To integrate the Squid::Tasks library into your project, we recommend first copying the entire include Squid::Tasks `include` directory into your project.
+
+You must then add the path of the include directory to the list of include directories in your project. In __Visual Studio__, this is done by right-clicking your project and selecting Properties. Then navigate to Configuration Properties -> C/C++ -> General, and add the the path to the include directory to “Additional Include Directories”.
+
+![Include Directory Settings in Visual Studio](images/setup01.png "Configuring Additional Include Directories in Visual Studio")
+
+Enabling Coroutines for C++14/17 (skip this step if using C++20)
+----------------------------------------------------------------
+C++ coroutines were only formally added to the standard with C++20.  In order to use them with earlier standards (C++14 or C++17), you must enable coroutines using a special compiler-specific compile flag.
+
+In __Visual Studio__, this is done by right-clicking your project and selecting Properties.  Then navigate to Configuration Properties -> C/C++ -> Command Line, and add `/await:strict` to “Additional Options”.
+
+(__IMPORTANT NOTE:__ If you are using VS 16.10 or earlier, you should instead add `/await` to "Additional Options", as shown below.)
+
+![Enabling Coroutines in Visual Studio](images/setup02.png "Enabling Coroutines in Visual Studio")
+
+If you are using __Clang__, you will need to add -fcoroutines-ts to your compiler command-line compilation parameters.
+
+If you are using the __Clang Platform Toolset__ from within Visual Studio, you will need to add -Xclang -fcoroutines-ts to your compiler command-line compilation parameters.