Update BOM.csv

Author: qgeissmann

core/BOM.csv

@@ -6,7 +6,7 @@ PiNoir camera	Head	1	RS	RS 790-2811
 32Gb SD card	Head	1	amazon	32G Samsung EVO SD card
 M3 12mm bolt	Head	6	ebay	
 M3 nuts	Head	4	ebay	http://www.ebay.co.uk/itm/A4-Marine-Grade-Stainless-Steel-Full-Nuts-M3-M4-M5-M6-M8-M10-M12-/181135033330?var=&hash=item2a2c7d43f2:m:mNQNbep6zOcVkOweGehWReQ
-M2 nuts, nylon	Head	2	ebay	
+M2 nuts (nylon)	Head	2	ebay	
 M2 6mm bolts	Head	2	ebay	
 Wifi dongle	Head	1	amazon	Edimax EW-7811UN
 Light box	Base	1	Polygonal Tree/Custom made	https://github.com/PolygonalTree/ethoscope_hardware/tree/master/core/light_box