Need help with HarvestMap/Merge

[Socos]

So I have viewed the videos here and I still do not understand how to actually use these mods. I have 2 HarvestMerge.lua files that I want to import into my game so that I have locations for nodes, but I don't know where to put these files in order for anything to work. Can someone help me?!

I've been trying this for like an hour, going back and forth between videos and README files and still can't understand what to do.