modify README

README.txt

@@ -1,13 +1,12 @@
-~/.xsessionrc                        <= graphical login
+~/.bash_profile           <= console login
 |
-`-- ~/.profile                       <= text login
-    |
-    |-- ~/.dotfiles/profile
-    |
-    * if shell is bash
-    |
-    `-- ~/.bashrc                    <= run bash
-        |
-        `-- ~/.dotfiles/bashrc
-            |
-            `-- /etc/bashrc
+|--~/.dotfiles/profile
+|
+`--~/.bashrc
+   |
+   `--~/.dotfiles/bashrc
+
+~/.xinitrc                <= startx (~/.config/openbox/autostart also executed)
+|
+`--~/.dotfiles/xinitrc
+