Fix cider-insert-in-repl not appending

Previously the input would just be dumped into the repl before wherever
the user previously left point.  Presumably the user always wants the
input to appear at the end of the buffer where it can be (edited and)
evaluated immediately.

Author: Lars Andersen

cider-interaction.el

@@ -1715,9 +1715,10 @@ If EVAL is non-nil the form will also be evaluated."
   (while (string-match "\\`[ \t\n\r]+\\|[ \t\n\r]+\\'" form)
     (setq form (replace-match "" t t form)))
   (with-current-buffer (cider-current-repl-buffer)
-    (let ((start-pos (point)))
+    (goto-char (point-max))
+    (let ((beg (point)))
       (insert form)
-      (indent-region start-pos (point)))
+      (indent-region beg (point)))
     (when eval
       (cider-repl-return)))
   (cider-switch-to-repl-buffer))