docs(Rust): 添加 hello-world

Author: guanguans

Rust/hello-world.rs

@@ -0,0 +1,8 @@
+/**.-----------------------------------------------
+ * |   Author: guanguans <[email protected]>
+ * |   Date: 2019-02-22 10:22
+ * '---------------------------------------------*/
+
+fn main() {
+    println!("Hello World!");
+}