Update README with interactive BOM and changelog

Added an interactive BOM section and changelog to README.

Author: pmandes

README.md

@@ -1,2 +1,18 @@
 # MiSTer_A8SIO
 Adapter for the SIO port to connect peripheral devices of the 8-bit Atari to the MiSTer FPGA.
+
+## Interactive BOM: ##
+
+<p align="center"><a href="https://htmlpreview.github.io/?https://raw.githubusercontent.com/pmandes/MiSTer_A8SIO/main/MiSTer_A8SIO/bom/ibom.html"><img src="https://raw.githubusercontent.com/pmandes/MiSTer_A8SIO/main/MiSTer_A8SIO/bom/bom.png" height="400"></a></p>
+
+## Changleog: ##
+
+**1.2**
+- fix: crossed lines from USB3 A-A cable
+
+**1.1**
+- prototype / not published
+- 2 * 4ch level shifters modules instead of HW221
+  
+**1.0**
+- initial project