A Doxyfile is generated from the Doxygen.in template. The template is
populated with version number, source and output paths, etc using values from
CMake.
A "doc" target is added to run the documentation. "doc" is not added to "all".
Documentation target is not added if doxygen is not found.
This should be good to merge. You should be able to go to jenkins and log on with your github username/password. Then clicking on the tick mark on the third commit above should take you directly to the actual test build.