Update metadata.yml & added readme

printer_mods/sgr33n/300mm-x-extruder-endcap/.metadata.yml

@@ -2,7 +2,7 @@
 # The title of your mod. Choose a short and descriptive name
 title: 300mm X-Extruder Endcap
 # A short description of your mod. Try to describe your mod with 1-2 short sentences
-description: This mod makes VoronDesign printers more awesome!
+description: This mod makes stabler and prettier the use of a 300mm profile for the X-Extruder.
 # Mod version: Set this to 1 when you are submitting a new mod. When you make changes to your mod, you may increment this number
 mod_version: 1
 # You may add your discord username here so people can contact you about your mod
@@ -28,7 +28,5 @@ cad:
 # "V0", "V0.1", "V0.2", "V0.2r1", "V1", "V1.6", "V1.8", "V1.8r1",  "V2", "V2.1", "V2.2", "V2.4", "V2.4r1", "V2.4r2", "VSW", "VT", "VTr1", "VL"
 # Please only specify printers that you have either tested your mod on yourself, or that someone else has tested for you. If you are unsure whether your
 # mod is compatible with a certain printer, don't list it here!
-#printer_compatibility:
-#- V1.8
-#- VT
-#- V2.4r2
+printer_compatibility:
+- VSW