moves individual examples to pub mods to force building and have less dead_code

examples/static-files/src/directory.rs

@@ -2,7 +2,7 @@
 use actix_files as fs;
 use actix_web::App;
 
-fn main() {
+pub fn main() {
     App::new().service(fs::Files::new("/static", ".").show_files_listing());
 }
 // </directory>

examples/static-files/src/main.rs

@@ -1,6 +1,6 @@
-mod configuration;
-mod configuration_two;
-mod directory;
+pub mod configuration;
+pub mod configuration_two;
+pub mod directory;
 // <individual-file>
 use actix_files::NamedFile;
 use actix_web::{web, App, HttpRequest, Result};