Update doc for schema creation

See gh-446

spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -1533,6 +1533,9 @@ when switching from in-memory to a '`real`' database that you don't make assumpt
 the existence of the tables and data in the new platform. You either have to set `ddl-auto`
 explicitly, or use one of the other mechanisms to initialize the database.
 
+NOTE: You can output the schema creation by enabling the `org.hibernate.SQL` logger. This
+is done for you automatically if you enable the <<boot-features-logging-console-output,debug mode>>.
+
 In addition, a file named `import.sql` in the root of the classpath will be executed on
 startup. This can be useful for demos and for testing if you are careful, but probably
 not something you want to be on the classpath in production. It is a Hibernate feature

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -837,6 +837,8 @@ messages to the console you can start your application with a `--debug` flag.
 	$ java -jar myapp.jar --debug
 ----
 
+NOTE: you can also specify `debug=true` in your `application.properties`.
+
 If your terminal supports ANSI, color output will be used to aid readability. You can set
 `spring.output.ansi.enabled` to a
 {dc-spring-boot}/ansi/AnsiOutput.Enabled.{dc-ext}[supported value] to override the auto