Add bin and edit workflow

bin/gems/rouge-4.7.0/lib/rouge/demos/rust

@@ -0,0 +1,12 @@
+use core::*;
+
+fn main() {
+    for ["Alice", "Bob", "Carol"].each |&name| {
+        do task::spawn {
+            let v = rand::Rng().shuffle([1, 2, 3]);
+            for v.each |&num| {
+                io::print(fmt!("%s says: '%d'\n", name, num))
+            }
+        }
+    }
+}