add println logging

src/main.rs

@@ -51,9 +51,13 @@ fn random() -> Template {
         Err(_) => panic!(""),
     };
 
+    println!("getting tune information...");
+
     let file_name = chosen_one.file_name().unwrap().to_str().unwrap();
     let file_title = chosen_one.file_stem().unwrap().to_str().unwrap();
 
+    println!("building context...");
+
     let context = RandomContext {
         title: String::from(format!("♪ {}", file_title)),
         music_file: String::from(file_name),