Update README.md

Author: wysaid

README.md

@@ -4,13 +4,15 @@ Some utils for cge filter including "Generator" & "Checker"
 ## Description
 
 Generator: A tool for quickly creating cge-filters.
+
 Checker: A tool for checking if the cge-rule-string is valid.
 
 ref: 
-
+```
 1. Android: [https://github.com/wysaid/android-gpuimage-plus](https://github.com/wysaid/android-gpuimage-plus)
 
 2. iOS: [https://github.com/wysaid/ios-gpuimage-plus](https://github.com/wysaid/ios-gpuimage-plus)
+```
 
 ## Platform ##