No documentation for matrix2pos

[GTFreeFlyer]

The documentation states that DCSBIOS is fully documented, yet I cannot find any info or examples for matrix2pos. Please add to the documentation.

[talbotmcinnis]

Checkout the example at https://github.com/DCS-Skunkworks/dcs-bios-arduino-library/blob/master/examples/Button_Matrix_Example/Button_Matrix_Example.ino

Let me know if you gets you pointed in the right direction. If you do figure out and would be willing to write a page for the wiki that would be great!