doxy_edit: Edits an existing Doxyfile
In nevrome/rdoxygen: Create Doxygen Documentation for Source Code

Changes options in doxygen config files.

1 2	doxy_edit(pkg = ".", doxyfile = "inst/doxygen/Doxyfile", options = c())

`pkg`	A string with the path to any subfolder of the R package root directory. Default: `"."`.
`doxyfile`	A string with the path to the `Doxyfile` relative to the package root folder indicated by `pkg`. Default: `"inst/doxygen/Doxyfile"`.
`options`	A named vector with new settings. The names represent the tags. A list of options can be found here: http://www.doxygen.nl/manual/config.html.