Update documentation

README.md

@@ -113,6 +113,12 @@ Provide generated-by prompt text in the Markdown file with a tag:
 
 Alternatively, use the `--generated-by GENERATED_BY` option. The tag takes precedence.
 
+### Publishing a directory
+
+*md2conf* allows you to convert and publish a directory of Markdown files rather than a single Markdown file if you pass a directory as `mdpath`. This will traverse the specified directory recursively, and synchronize each Markdown file.
+
+If a Markdown file doesn't yet pair up with a Confluence page, *md2conf* creates a new page and assigns a parent. Parent-child relationships are reflected in the navigation panel in Confluence. You can set a root page ID with the command-line option `-r`, which constitutes the topmost parent. (This could correspond to the landing page of your Confluence space. The Confluence page ID is always revealed when you edit a page.) Whenever a directory contains the file `index.md` or `README.md`, this page becomes the future parent page, and all Markdown files in this directory (and possibly nested directories) become its child pages (unless they already have a page ID). However, if an `index.md` or `README.md` file is subsequently found in one of the nested directories, it becomes the parent page of that directory, and any of its subdirectories.
+
 ### Ignoring files
 
 Skip files in a directory with rules defined in `.mdignore`. Each rule should occupy a single line. Rules follow the syntax of [fnmatch](https://docs.python.org/3/library/fnmatch.html#fnmatch.fnmatch). Specifically, `?` matches any single character, and `*` matches zero or more characters. For example, use `up-*.md` to exclude Markdown files that start with `up-`. Lines that start with `#` are treated as comments.