update Readme

Show how to configure source code to work with MySQL or PostgreSQL

Author: tienbku

README.md

@@ -1,4 +1,4 @@
-# Spring Boot JWT Authentication example with Spring Security & PostgreSQL
+# Spring Boot JWT Authentication example with Spring Security & Spring Data JPA
 
 For more detail, please visit:
 > [Secure Spring Boot App with Spring Security & JWT Authentication](https://bezkoder.com/spring-boot-jwt-authentication/)
@@ -9,7 +9,54 @@ For more detail, please visit:
 
 > [Spring Boot + Angular 8 JWT Authentication](https://bezkoder.com/angular-spring-boot-jwt-auth/)
 
+## Dependency
+– If you want to use PostgreSQL:
+```xml
+<dependency>
+  <groupId>org.postgresql</groupId>
+  <artifactId>postgresql</artifactId>
+  <scope>runtime</scope>
+</dependency>
+```
+– or MySQL:
+```xml
+<dependency>
+  <groupId>mysql</groupId>
+  <artifactId>mysql-connector-java</artifactId>
+  <scope>runtime</scope>
+</dependency>
+```
+## Configure Spring Datasource, JPA, App properties
+Open `src/main/resources/application.properties`
+- For PostgreSQL:
+```
+spring.datasource.url= jdbc:postgresql://localhost:5432/testdb
+spring.datasource.username= postgres
+spring.datasource.password= 123
+
+spring.jpa.properties.hibernate.jdbc.lob.non_contextual_creation= true
+spring.jpa.properties.hibernate.dialect= org.hibernate.dialect.PostgreSQLDialect
+
+# Hibernate ddl auto (create, create-drop, validate, update)
+spring.jpa.hibernate.ddl-auto= update
 
+# App Properties
+bezkoder.app.jwtSecret= bezKoderSecretKey
+bezkoder.app.jwtExpirationMs= 86400000
+```
+- For MySQL
+```
+spring.datasource.url= jdbc:mysql://localhost:3306/testdb?useSSL=false
+spring.datasource.username= root
+spring.datasource.password= 123456
+
+spring.jpa.properties.hibernate.dialect= org.hibernate.dialect.MySQL5InnoDBDialect
+spring.jpa.hibernate.ddl-auto= update
+
+# App Properties
+bezkoder.app.jwtSecret= bezKoderSecretKey
+bezkoder.app.jwtExpirationMs= 86400000
+```
 ## Run Spring Boot application
 ```
 mvn spring-boot:run