update readme

README.md

@@ -2,7 +2,19 @@
 
 Migrate to UserFrosting 4 from previous versions of UserFrosting, and other frameworks. 
 
-# Installation
+## Usage
+
+This Sprinkle sets up a fresh installation of UF4 with a pre-existing UF 3.1 database.  It will attempt to migrate your users, groups, event log, and custom permissions (`authorize_group`) to UF4 entities.
+
+### Step 1
+
+MAKE A COPY OF YOUR CURRENT DATABASE.  This tool does not drop any tables, but it is best to err on the cautious side.
+
+### Step 2
+
+Clone the UF4 repo and run `composer install`, as per the documentation.  Manually copy `app/sprinkles.example.json` to `app/sprinkles.json`.
+
+### Step 3
 
 Edit UserFrosting `app/sprinkles.json` and add the following to the `require` list : `"userfrosting/migrate": "~4.1.0"`. Also add `migrate` to the `base` list. For example:
 
@@ -20,10 +32,14 @@ Edit UserFrosting `app/sprinkles.json` and add the following to the `require` li
 }
 ```
 
-### Update Composer
+### Step 4 - Update Composer
+
+Run `composer update` from the root project directory.
+
+### Step 5
 
-- Run `composer update` from the root project directory.
+Run `php bakery upgrade` from the root project directory.  It will prompt you for the credentials for your database - use the credentials for the database you wish to upgrade.
 
-### Run migration
+### Step 6
 
-- Run `php bakery bake` from the root project directory.
+Begin migrating your code over to UF 4.1.