commit 90b3888eef479aec936c5bf8083e7172cd84edab
Author: Christian Ehringfeld <c.ehringfeld@t-online.de>
Date:   Sun Sep 13 17:28:31 2015 +0200

    ...

diff --git a/Doxyfile b/Doxyfile
index e23aaac..8978cbd 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -815,7 +815,7 @@ RECURSIVE              = YES
 # Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                = samples/
+EXCLUDE                =
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded