I guess I'll be nice and make the installation guide. It's just like any other mod.
Drag the RSTW zip file into your data folder, which is obviously located in your main fonline reloaded directory.
Then, go back to your main directory and open your DataFiles text file.
Copy the following line to the end of your file,
data\RSTW.zip
Save the changes and close.
Enjoy.
Really love this mod by the way. Good work.