improve driver Readme

README.md

@@ -22,7 +22,7 @@ in an internal directory, but might end up in your home directory. Using these
 files, driver.love can make changes to these apps without needing to restart
 them.
 
-![demo](assets/20221228-luaML-driver.gif)
+![demo](assets/luaML-driver.gif)
 
 This repo is an example of a [Freewheeling App](http://akkartik.name/freewheeling),
 designed above all to be easy to run, easy to modify and easy to share.
@@ -66,19 +66,27 @@ The driver will highlight them in green or red when they fail.
 
 ## Hacking
 
-To edit formatting you'll need to modify the code for the app. To do
-this live without restarting the app each time, download [the driver
-app](https://git.sr.ht/~akkartik/driver.love). Here's an example session
-using a fork of this repo:
+While this app is used to help modify other apps, it is also itself a
+freewheeling app you can modify with another copy of itself with just a few
+changes. On a unix-like platform, run the following commands to turn this repo
+into a "meta-driver":
 
-![making changes without restarting the app](assets/2.gif)
+```
+sed -i -e 's/app_driver/driver_driver2/g' -e 's/driver_app/driver2_driver/' driver.lua
+sed -i -e 's/driver2_driver/driver3_driver2/g' -e 's/driver_driver2/driver2_driver3/' live.lua
+```
+
+Now you can modify the code for the driver without restarting it each time.
+Run some app, then run this driver, then run the meta-driver. Here's an
+example session:
+
+![making changes without restarting the app](assets/codemap-canvas.gif)
 
 [Some reference documentation on how to create your own apps.](reference.md)
 
-If the app being modified by the driver lives in a .love file, your changes
-will go into the [save directory](https://love2d.org/wiki/love.filesystem.getSaveDirectory).
-If it lives in a directory (like this repo), your changes will go straight
-into the same directory.
+If you run off of this repo, changes to the driver will get saved right here.
+If you first create a .love file, your changes will go into the
+[save directory](https://love2d.org/wiki/love.filesystem.getSaveDirectory).
 
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