add prerequisites to readme

README.org

@@ -18,6 +18,21 @@ design choices, I recommend referring to the source code itself. The source code
 typically contains comments that provide insights into the code's functionality
 and rationale.
 
+* Prerequisites
+
+To use the project, you'll need the following prerequisites:
+
+** Mandatory Prerequisites
+
+- A functional SYCL compiler. You can choose from options like Intel's oneAPI or
+  AdaptiveCpp.
+
+- The "xxhash" library.
+
+** Optional Prerequisite
+
+- CMake (for generating build files)
+
 * Compilation
 
 Regrettably, integrating Intel's oneAPI with the AMD GPU plugin proves to be