add details to the main README.md for v1.0 release

Author: stefansjs

README.md

@@ -1,2 +1,43 @@
 # PelletBurner
-Pellet Burner is a 3d printer toolhead for a Voron 0 using the Greenboy3d pellet extruder hotend based on the Dragon Burner 
+Pellet Burner is a 3d printer toolhead for a Voron 0 using the Greenboy3d pellet extruder hotend based on the [Dragon Burner toolhead](https://github.com/chirpy2605/voron/tree/main/V0/Dragon_Burner). The Dragon Burner
+
+## CAD
+
+the cad/ directory has the main fusion archive used to model the pellet burner. There is a fusion archive and two step 
+files. The Pellet Burner.step file could be printed, but care needs to be taken to 
+
+## Print Files
+
+You need to print 4 files to use this toolhead.
+
+  - Pellet Burner body.step OR Pellet Burner body with supports.step
+  - Pellet Burner scoop, back.step
+  - Pellet Burner scoop, front.step
+  - Pellet Burner Tube Adapter.step
+
+  `Pellet Burner body.step` has 2 overhangs. You can either use slicer supports, or print the `Pellet Burner body with supports.step`
+  file.
+
+  ## Alternate ducts
+
+  The Dragon Burner has multiple ducts designed in. I imported those duct options directly into fusion. In order to 
+  print the Pellet Burner with one of the Dragon Burner's alternate ducts, you'll need to open the fusion archive and 
+  un-hide the ducts you want. They are all in the Pellet Burner -> DragonBurner v0.2 Ducts component. Read more about it
+  in the DragonBurner repository https://github.com/chirpy2605/voron/tree/main/V0/Dragon_Burner.
+
+  ## Current limitations
+
+  The total height of the toolhead is quite a bit more than the default Mini StealthBurner toolhead. My configuration shows about 100mm of z travel after installing the Pellet Burner.
+
+  The Dragon Burner has integrated support for a logo LED as well as several options for a nozzle LEDs. At the moment the Pellet Burner works but doesn't include any faceplate, so all LEDs were left out of this design. I'm not entirely sure that adding a faceplate will improve the aesthetics, but work part LED support should probably be added at some point.
+
+  Additionally, Dragon Burner has support for several different built-in probes. At the moment the design only allows using those probes by going into the fusion model and manually exporting the pellet burner body with alternate fan ducts. This is *NOT* a drop-in replacement for the Dragon Burner since the toolhead is much taller. Any probe integrations would also need to be modified in the rest of the printer as well.
+
+  The motor collides with corner brackets in the BoxZero build. I've included my configurations for avoiding these areas of the build plate if you also have the BoxZero corner brackets.
+
+  ## Version History
+
+  ### v1.0 - Initial release
+
+  First "release" version. It is printed, tested, and working. It robs the build volume of ~20 mm of z motion. There is no documentation yet.
+