starting to add doc comments

Sources/IPSWDownloads/Board.swift

@@ -9,7 +9,12 @@ import Foundation
 public struct Board {
   public let boardconfig: String
   public let platform: String
+
+
+  /// The CHIP tag is a 16-bit unsigned integer that denotes the type of chip the firmware is to be installed to. It is one of the few tags that is not read from the fuses, but is instead hardcoded in the bootchain. It is used to prevent incompatible firmwares from being installed; different processors may have their MMIO registers in different locations.
   public let cpid: Int
+
+  /// The Board ID of a device (also known as BORD, BDID, or ApBoardId) is a value (usually represented as `uint8\_t`) that represents multiple characteristics of the logic board
   public let bdid: Int
 
   public init(boardconfig: String, platform: String, cpid: Int, bdid: Int) {