avy.el (avy-move-region): Insert in original window

Fixes #187

avy.el

@@ -1484,7 +1484,8 @@ The window scope is determined by `avy-all-windows' or
 ;;;###autoload
 (defun avy-move-region ()
   "Select two lines and move the text between them here."
-  (interactive)
+  (interactive)
+  (avy-with avy-move-region
     (let* ((initial-window (selected-window))
            (beg (avy--line))
            (end (save-excursion
@@ -1493,6 +1494,7 @@ The window scope is determined by `avy-all-windows' or
                   (point)))
            (text (buffer-substring beg end))
            (pad (if (bolp) "" "\n")))
+      (move-beginning-of-line nil)
       (delete-region beg end)
       (select-window initial-window)
       (insert text pad))))