step three: create new .rgit directory

.gitignore

@@ -1 +1,2 @@
 /target
+.rgit

src/data.rs

@@ -0,0 +1,8 @@
+use std::fs;
+
+static RGIT_DIR: &'static str = ".rgit";
+
+pub fn init() -> std::io::Result<()> {
+    fs::create_dir(RGIT_DIR)?;
+    Ok(())
+}

src/main.rs

@@ -1,4 +1,5 @@
 use clap::{App, SubCommand};
+mod data;
 
 fn main() {
     let matches = App::new("rgit vcs")
@@ -14,5 +15,8 @@ fn main() {
 }
 
 fn init() {
-    println!("Hello, world!");
+    match data::init() {
+        Ok(()) => println!("Repository created"),
+        _ => println!("Failed. Perhaps the repository already exists."),
+    }
 }