Update README.md

updated macro to work with HHv2.1

README.md

@@ -143,9 +143,24 @@ I need some time to finalize assembly instructions. If you have questions you'll
 
 ***The code only works with https://github.com/moggieuk/Happy-Hare** If you haven't updated yet you really should.
 
-Copy mmu_additional.cfg to your printer config directory mmu/base/ and include it in your printer.cfg below all of the mmu includes via [include mmu/base/mmu_additional.cfg]
+Latest version provided by [thisiscam](https://github.com/thisiscam)
+I added the option to push the filament tip back into the hotend
 
-You will need to adjust the parameters in mmu_addtional as well, like setting up your cutter location, speeds, etc. More information in the cfg file itself.
+Copy additional.cfg to your printer config directory mmu/base/ and include it in your printer.cfg below all of the mmu includes via [include additional.cfg]
+
+
+
+In mmu_parameters.cfg:
+set form_tip_macro: _MMU_CUT_TIP
+set toolhead_extruder_to_nozzle and toolhead_sensor_to_nozzle to corresponding measured values of your toolhead.
+set force_form_tip_standalone: 1
+
+In additonal.cfg
+You will need to adjust the parameters in addtional as well, like setting up your cutter location, speeds, etc. More information in the cfg file itself.
+set variable_output_park_pos: ... to the distance from the nozzle tip to the blade
+If you are using a gantry servo, remove the hashtags related to "gantry_servo"s in this file.
+The _MMU_CUT_TIP now has an option to move to a "next location" immediately after making the cut. For instance,  set it to the purge tower's location from the slicer. The _SET_LOC_AFTER_TOOLCHANGE sets this location, and the _MMU_CUT_TIP macro will be responsible for traveling immediately after the cut but prior to the unload. See the orcaslicer's toolchange gcode two messages down as an example. If you don't plan to use it, it's safe to ignore this point.
+![image](https://github.com/sorted01/Filametrix/assets/83211473/7356e881-aa94-4ef5-a443-2704a1233318)