Added conditional beeping to MECHANICAL_GANTRY_CALIBRATION.cfg. Adjusted directory structure section in readme.md.

cfgs/MECHANICAL_GANTRY_CALIBRATION.cfg

@@ -72,16 +72,16 @@ gcode:
         SET_TMC_CURRENT STEPPER=stepper_z1 CURRENT={my_current} ; drop current
     {% endif %}
 
-    BEEP I=1
+    CONDITIONAL_BEEP I=1
     G4 P200 ; Probably not necessary, it is here just for sure
 
     SET_KINEMATIC_POSITION Z={z_max - 25} ; Trick printer into beleiving the gantry is 25mm lower than it is ; CHANGED
 
     G1 Z{z_max} F{6 * 60} ; based on above figures, there will be 20mm worth of grinding ; CHANGED
-    BEEP I=2
+    CONDITIONAL_BEEP I=2
     G4 P10000 ; wait 10 seconds
     G1 Z{z_max -6} F{6 * 60} ; move 4mm down
-    BEEP I=3
+    CONDITIONAL_BEEP I=3
     G4 P200 ; same as the first one
     
     SET_TMC_CURRENT STEPPER=stepper_z CURRENT={oldcurrent} HOLDCURRENT={oldhold}