update docs

README.md

@@ -53,7 +53,7 @@ The plugin introduces the *!import* statement in your config's *nav* section. Yo
 <details><summary><b>!import Statement Sections</b></summary>
   
   - **{url}**: Only *required* part of *!import* statement (e.g., `https://github.com/{user}/{repo name}`).
-  - **branch={branch}**: Tells *multirepo* what branch to use. Defaults to *master* if not supplied.
+  - **branch={branch}**: Tells *multirepo* what branch (or tag) to use. Defaults to *master* if not supplied. This is the same argument used in `git clone` (see [here](https://git-scm.com/docs/git-clone#Documentation/git-clone.txt---branchltnamegt)).
   - **docs_dir={path}**: The path to the *docs* directory for the section. Defaults to *docs/\** (a glob) if not supplied.
   - **multi_docs={True | False}**: If set to *True*, all *docs* directories will be imported (more info [here](#α-multiple-docs-directories-in-imported-repo-alpha)).
   - **config={filename}.yml**: Tells *multirepo* the name of the config file, containing configuration for the plugin. The default value is also `mkdocs.yml`. This config file can live within the docs directory *or* in the parent directory.