After carefully looking at these two methods, as of right now they do not
belong in the reader, as they should also be used by the writer. Thus the
decision was made to move them back into the class containing the source
and dest fields, site.rb.
Signed-off-by: Martin Jorn Rogalla <martin@martinrogalla.com>
Extracted `in_source_dir` from site.rb into reader.rb.
Updated all the references and tests.
Signed-off-by: Martin Jorn Rogalla <martin@martinrogalla.com>