message: generate_docs: warning for unsupported tag is ok
diff: @@ -40,7 +40,7 @@ pushd $install_prefix/include/dronecore
  doxygen_output_file=".doxygen_output.tmp"
  doxygen $source_dir/.doxygen &> $doxygen_output_file
  cat $doxygen_output_file
  -if cat $doxygen_output_file | grep warning
  +if cat $doxygen_output_file | grep "warning" | grep -v "ignoring unsupported tag"
  then
  return_result=1
  echo "Please check doxygen warnings."
  