Update docs about MacOS

README.md

@@ -56,6 +56,7 @@ sudo apt-get install python3-xlib python3-pyqt5
 sudo pip3 instlal PyMuPDF grip qrcode
 ```
 
+### Package description.
 
 | Package      | Use for                                          |
 | :--------    | :----                                            |
@@ -70,6 +71,12 @@ sudo pip3 instlal PyMuPDF grip qrcode
 (require 'eaf)
 ```
 
+### Why this awesome framework can't works with MacOS?
+There are mainly three obstacles:
+1. I can't make dbus/python-dbus works on MacOS High Sierra
+2. This framework need use X11 reparent to stick Qt5 window to emacs frame, but i don't know how to make X11 works on MacOS.
+3. Qt5 QGraphicsView/QGraphicsScene can't work MacOS, specify QGraphicsVideoItem can't work.
+
 ## Usage
 
 ```
@@ -110,12 +117,6 @@ Then test again, if "emacs -Q" works fine, it's must be something wrong with you
 
 If "emacs -Q" still have problem, please [report bug](https://github.com/manateelazycat/emacs-application-framework/issues/new)
 
-### Why this awesome framework can't works with MacOS?
-There are mainly three obstacles:
-1. I can't make dbus/python-dbus works on MacOS High Sierra
-2. This framework need use X11 reparent to stick Qt5 window to emacs frame, but i don't know how to make X11 works on MacOS.
-3. Qt5 QGraphicsView/QGraphicsScene can't work MacOS, specify QGraphicsVideoItem can't work.
-
 ## How to develop new plugins?
 [Developer manual](HACKING.md)