Update README.md

Catherine22 · web-flow · commit 25401cadc3ff · 2020-01-28T21:11:56.000+08:00
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-# AAD-Preparation
+# Advanced Android Development
 
 Associate Android Developer Study Guide   
 https://developers.google.com/training/certification/associate-android-developer/study-guide/   

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# AAD-Preparation`
	`1`	`+# Advanced Android Development`
`2`	`2`
`3`	`3`	`Associate Android Developer Study Guide`
`4`	`4`	`https://developers.google.com/training/certification/associate-android-developer/study-guide/`