init start modules

cookbook/src/lib.rs

@@ -0,0 +1,7 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}

cookbook/src/meals.rs

@@ -0,0 +1,11 @@
+
+enum Meal {
+    FullMeal,
+    Composed,
+}
+
+fn retrieve_all() -> Vec<Meal> {
+    vec!()
+}
+
+