Fix ordering instructions and add .drl file

Author: sfe-SparkFro

Hardware (Beta)/Production/ordering_instructions.txt

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+panel size, 142x177mm
+PCB thickness, 1.6mm
+number of layers, 2
+soldermask color, Red
+silkscreen color, White
+oz copper, 1oz
+finish, HASL lead free
+stencils, top
+pcs per panel, 6
+min trace width, 0.2540mm / 0.0100in
+min drill size, 0.3048mm / 0.0120in