CONTRIBUTING.md

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+## Symbols
+Symbols are referenced from origin at pin 1
+
+![pin 1](./.allspice/images/pin1_ex.png)
+
+### connectors.SchLib
+The following properties are required for connectors:
+*Design Item ID*: Part Number
+*Voltage Rating*: {voltage}{V|mV}
+*Current Rating*: {current}{A|mA}
+*Contact Finish*: {Gold|Tin|Nickel}
+*Manufacturer 1*: {manufacturer name specified in DigiKey}
+*Manufacturer Part Number 1*: {manufacturer part number specified in DigiKey}
+*Number of Positions*
+*Pitch*: {inches}" ({millimeters}mm)
+*Series*: {product series specified in DigiKey}