docs: Move config reference information to new Config_Reference.md

Move all the config reference information from files in the config/
directory to a new Config_Reference.md document.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

config/example-cartesian.cfg

@@ -0,0 +1,71 @@
+# This file is an example config file for cartesian style printers.
+# One may copy and edit this file to configure a new cartesian
+# printer.
+
+# DO NOT COPY THIS FILE WITHOUT CAREFULLY READING AND UPDATING IT
+# FIRST. Incorrectly configured parameters may cause damage.
+
+# See docs/Config_Reference.md for a description of parameters.
+
+[stepper_x]
+step_pin: ar54
+dir_pin: ar55
+enable_pin: !ar38
+step_distance: .0225
+endstop_pin: ^ar3
+position_endstop: 0
+position_max: 200
+
+[stepper_y]
+step_pin: ar60
+dir_pin: !ar61
+enable_pin: !ar56
+step_distance: .0225
+endstop_pin: ^ar14
+position_endstop: 0
+position_max: 200
+
+[stepper_z]
+step_pin: ar46
+dir_pin: ar48
+enable_pin: !ar62
+step_distance: .005
+endstop_pin: ^ar18
+position_endstop: 0.5
+position_max: 200
+
+[extruder]
+step_pin: ar26
+dir_pin: ar28
+enable_pin: !ar24
+step_distance: .004242
+nozzle_diameter: 0.500
+filament_diameter: 3.500
+heater_pin: ar10
+sensor_type: EPCOS 100K B57560G104F
+sensor_pin: analog13
+control: pid
+pid_Kp: 22.2
+pid_Ki: 1.08
+pid_Kd: 114
+min_temp: 0
+max_temp: 210
+
+[heater_bed]
+heater_pin: ar8
+sensor_type: EPCOS 100K B57560G104F
+sensor_pin: analog14
+control: watermark
+min_temp: 0
+max_temp: 110
+
+[mcu]
+serial: /dev/ttyACM0
+pin_map: arduino
+
+[printer]
+kinematics: cartesian
+max_velocity: 500
+max_accel: 3000
+max_z_velocity: 25
+max_z_accel: 30