Added BOM to Readme

Author: mathisschmieder

README.md

@@ -7,5 +7,8 @@ This project provides a Raspberry Pi Hat for the [MMDVM_HS Hotspot](https://gith
 
 The PCB is designed in KiCad and the necessary libraries are included. The supplied Gerber files can be used to order PCBs, for example at Elecrow or DirtyPCBs. The board's dimensions are 65x30mm.
 
+## BOM
+All necessary parts can be ordered at Mouser using the following [shopping cart](http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=9075204188)
+
 ## License
 This project is released under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 (CC-BY-NC-SA 3.0, https://creativecommons.org/licenses/by-nc-sa/3.0/) license. You may edit and share it as you like, as long as credit is given and the license is not changed. You can build as many boards for you and your friends as you like and you can even sell it to them to cover your costs, **however it is strictly forbidden to turn this into a commercial product! You are not allowed to build and sell these boards for profit!**