add $5 campaign

Author: Packt-ITService

README.md

@@ -1,2 +1,7 @@
+## $5 Tech Unlocked 2021!
+[Buy and download this Video for only $5 on PacktPub.com](https://www.packtpub.com/product/sql-beginner-to-guru-mysql-edition-master-sql-with-mysql-video/9781838982829)
+-----
+*The $5 campaign         runs from __December 15th 2020__ to __January 13th 2021.__*
+
 # SQL-Beginner-to-Guru-MySQL-Edition---Master-SQL-with-MySQL
 Code Repository for SQL Beginner to Guru: MySQL Edition - Master SQL with MySQL, Published by Packt