unimix Documentation

[Lewis Rosenthal]

Currently, there is no documentation for unimix, leading to (among other things) lack of sufficient feedback from testers whose hardware requires setting/getting various input/output levels.

All parameters should be addressed, with an easy-to-read drill-down list of what id does what.

The documentation should initially be in the form of a simple txt file, but later compiled into a .inf with standard documentation for Uniaud itself (see separate ticket).

The component on this ticket should be "Docuemntation" and this will be recharacterized when that category is available.