Support sqlScriptEncoding in schema.sql

Fixes gh-1165, fixes gh-1164

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -158,6 +158,7 @@ content into your application; rather pick only the properties that you need.
 	spring.datasource.initialize=true # populate using data.sql
 	spring.datasource.schema= # a schema (DDL) script resource reference
 	spring.datasource.data= # a data (DML) script resource reference
+	spring.datasource.sqlScriptEncoding= # a charset for reading SQL scripts
 	spring.datasource.platform= # the platform to use in the schema resource (schema-${platform}.sql)
 	spring.datasource.continueOnError=false # continue even if can't be initialized
 	spring.datasource.separator=; # statement separator in SQL initialization scripts