Guideline for turning lua code into addon?

[Barleduq]

Long ago, I found a post on here giving steps to turn any bit of lua code into an addon. I recently found a weakaura that reports token price, and I'd much rather have it as an addon. Unfortunately, my disk drive ate itself back in February, and I had to create a whole new machine, and lost my bookmarks. Could someone point me to this post?

I'm sure I'll have more questions then. I'm currently planning on snitching code from other addons to give it a frame and make it moveable. I don't code well, but I can copy-paste! (assuming I can figure out the effective code snippets)

Then I'll just have to make it *actually* update on price change. *sigh*
advTHANKSance
-Barleduq