Ignoring temp files generated when compiling Doxygen
making reference interactive in Doxygen file
Adding info on how to do Doxygen documentation to style guide, based on notes from BEK workshop and more
Renaming file to make room for a new one
Adding new Doxygen chapter on how to use Xcode as IDE, for development, debugging, and access to Doxygen documentation
Adding new appendix chapter to front page index