Another README
Custom html header for Doxygen

This adds the description meta tag.
Made jucetimer-callback private, added Doxygen.
Some more Doxygen documentation...
Tried to document the Introjucer-generated code...
Added check for NULL in Address constructor.
Added check for NULL in setAddress
Even more documentation.
SourceController supports changing of cWONDER address

TODO: use this in GUI and SpaopAudioProcessor::setStateInformation
Some more Doxygen tweaking.
Removed unused (re-)define.
Re-rendered all those Doxygen changes.