Update readmes and gerbers

[PRE-RELEASE] Sweep Bling MX/gerbers/README.md

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+# Notes:
+
+- **DRILL TIME FEE**: When ordering PCBs with complex shapes like the switch plate and bottom plate, it is possible that the factory will ask for additional fees.
+
+# PCB Hardware Kit (for both sides)
+## Required
+- 1x PCB Kit
+- 2x promicro compatible boards or nice!nanos
+- 34 MX switches
+- 34 keycaps
+
+### Optional:
+- 2x Battery (required only for wireless; 301230 / 301228)
+- 2x Power switches (recommended for wireless; MSK 12C02)
+- 2x reset switches ([B3U-1000P(M)](https://github.com/davidphilipbarr/Sweep/issues/20))
+
+# Case Hardware Kit (for both sides)
+
+## Required:  
+- 16x M2 Screws
+- 8x M2 Spacers. (Max diameter: 3mm, Length: 6-8mm)
+- 8-12x Silicone feet stickers
+
+### Optional:
+- 2x Splitkb tenting puck
+- 2x Manfrotto MP3-BK tripods