Update README.md

Author: zaoqi

README.md

@@ -1,3 +1,9 @@
+# Install
+
+* [jailbreak](https://www.mobileread.com/forums/forumdisplay.php?f=150) and install [KUAL](https://www.mobileread.com/forums/showthread.php?t=203326)
+* install [kterm](https://github.com/bfabiszewski/kterm/releases)
+* copy `extensions` to Kindle.
+
 # Build
 
 ## Requirements
@@ -10,12 +16,6 @@
 $ make
 ```
 
-# Install
-
-* [jailbreak](https://www.mobileread.com/forums/forumdisplay.php?f=150) and install [KUAL](https://www.mobileread.com/forums/showthread.php?t=203326)
-* install [kterm](https://github.com/bfabiszewski/kterm/releases)
-* copy `extensions` to Kindle.
-
 # Screenshot
 
 ![screenshot 1](./screenshot/screenshot_2019_07_16T15_54_28+0800.png)