Extending Blockly with new openHAB commands

I agree.

Not sure if you saw it but I am currently in the process of moving the blockly reference to openhab docs (I am already discussing a few things with @Confectrician how to do it best). I have already forked the repo and moved over the intro and some minor parts. It will take another few (hopefully not too many) weeks though, until I have done that as I am also refining the images, so everything looks very pretty.
The final blockly-docs link is the one that I would then want to put the toolbox only when I am done with that, e.g.

 /link/blocklib    /docs/configuration/rules-blockly-main.html

So, I am on it.