added postgres

application.properties

+spring.datasource.driverClassName=org.postgresql.Driver
+spring.datasource.maxActive=10
+spring.datasource.maxIdle=5
+spring.datasource.minIdle=2
+spring.datasource.initialSize=5
+spring.datasource.removeAbandoned=true

pom.xml

 		</dependency>
 
 		<dependency>
-			<groupId>org.hsqldb</groupId>
-			<artifactId>hsqldb</artifactId>
-			<scope>runtime</scope>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-jdbc</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.example</groupId>
+			<artifactId>throwup-thursday</artifactId>
+			<version>0.0.1-SNAPSHOT</version>
+		</dependency>
 	</dependencies>
 
 	<build>

src/main/java/com/example/throwupthursday/config/DatabaseConfig.java

+package com.example.throwupthursday.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.jdbc.DataSourceBuilder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+import javax.sql.DataSource;
+
+@Configuration
+public class DatabaseConfig {
+    @Bean
+    @Primary
+    @ConfigurationProperties(prefix = "spring.datasource")
+    public DataSource dataSource() {
+        return DataSourceBuilder.create().build();
+    }
+}