Migrate Structure

docs/modules/ROOT/pages/getting-started.adoc

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+Build from the command line (and "install" the samples):
+
+----
+$ ./mvnw clean install
+----
+
+(If you like to YOLO add `-DskipTests`.)
+
+Run one of the samples, e.g.
+
+----
+$ java -jar spring-cloud-function-samples/function-sample/target/*.jar
+----
+
+This runs the app and exposes its functions over HTTP, so you can
+convert a string to uppercase, like this:
+
+----
+$ curl -H "Content-Type: text/plain" localhost:8080/uppercase -d Hello
+HELLO
+----
+
+You can convert multiple strings (a `Flux<String>`) by separating them
+with new lines
+
+----
+$ curl -H "Content-Type: text/plain" localhost:8080/uppercase -d 'Hello
+> World'
+HELLOWORLD
+----
+
+(You can use `^Q^J` in a terminal to insert a new line in a literal
+string like that.)