readme updated

Author: hasancse91

13-ThirteenthClass/README.md

@@ -1,13 +1,13 @@
-# Android Ninja - Class No: 12
-Date: 13 October, 2017
+# Android Ninja - Class No: 13
+Date: 14 October, 2017
 
 ## Topics ##
+- `Fragment`
 - SQLite Database implementation with abstraction layer
 	- Create Database
 	- Create Table
 	- Write a record (row) into table
-	- Read all records from table
+	- Read all records from `student` table and show in a `RecyclerView`
 	- Count the number of row in table
 	- Search a student by his registration number
-
-No concrete implementation for database query. I implement here an abstraction layer for query. Activity class just call a method of an `interface` and implement a `callback` for query result.
+	- Delete a student by his registration number