private String outputResults(List<String> modifiedFiles, List<String> deletedFiles) {
		StringBuilder sb = new StringBuilder();
		if (!modifiedFiles.isEmpty()) {
			sb.append(MODIFIED_FILES_HEADER);
			modifiedFiles.forEach(f -> sb.append("- ").append(f).append("\n"));
		}
		if (!deletedFiles.isEmpty()) {
			sb.append(DELETED_FILES_HEADER);
			deletedFiles.forEach(f -> sb.append("- ").append(f).append("\n"));
		}