Add documentation macro to minor mode for keybindings

Inserts the default documentation for keybindings into the output for C-h m or
C-h f clj-refactor-mode. Given all the hydra and other documentation overrides
it might be preferable to link to that, but I think this increased
discover-ability as is.

Author: dgtized

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Up next
 
+- Display keymap bindings in documentation for minor mode
 - New config setting `cljr-libspec-whitelist` to prevent libspecs which appear unused but are side-effecting at load from being pruned.
 - [#301] (https://github.com/clojure-emacs/clj-refactor.el/issues/301) `ad`  has gained a prefix to declare the symbol under the cursor.
 - [#312](https://github.com/clojure-emacs/clj-refactor.el/issues/312) Allow `sut` alias to be customized.

clj-refactor.el

@@ -3985,7 +3985,9 @@ If injecting the dependencies is not preferred set `cljr-inject-dependencies-at-
 ;; ------ minor mode -----------
 ;;;###autoload
 (define-minor-mode clj-refactor-mode
-  "A mode to keep the clj-refactor keybindings."
+  "A mode to keep the clj-refactor keybindings.
+
+\\{clj-refactor-map}"
   nil " cljr" clj-refactor-map
   (if clj-refactor-mode
       (add-hook 'post-command-hook #'cljr--post-command-hook :append :local)