updated readme

README.md

@@ -29,6 +29,14 @@ Theo can be used for many projects. The modularity of the code allows for a prog
 * [linux-pe](https://github.com/can1357/linux-pe)
 * [cmkr](https://github.com/build-cpp/cmkr)
 
+### Building
+
+Download and install cmake on your system, then execute the following command in the root dir of this project:
+
+* `cmake -B build`
+
+Then navigate into `dependencies/xed/` and run `python3 mfile.py`. Building XED can be tricky on windows, I suggest you use the visual studios console since it has env vars to everything needed to build XED. linux seems to build it just fine...
+
 ## Linking - Dynamic And Static
 
 #### What Is A Linker