Adds write script for recipes, adds ingredients migrations

cookbook/src/bin/show_recipes.rs

@@ -16,7 +16,7 @@ fn main() {
 
     println!("Here are {} recipes :", result.len());
     for rec in result {
-        println!("{}", rec.title);
+        println!("*************\n{}", rec.title);
         println!("-------------\n");
         println!("{}", rec.ingredients);
     }