README.md in database_flusher-0.2.2 vs README.md in database_flusher-0.2.3

@@ -9,17 +9,25 @@
 
 * No monkey patching - uses `ActiveSupport::Notifications` and `Mongo::Monitoring::Global` to catch `INSERT` statements
 * Fast `:deletion` strategy that cleans only tables/collections where `INSERT` statements were performed
 * Faster `disable_referential_integrity` for PostgreSQL
 * Executes multiple `DELETE` statements as one query with ActiveRecord
+* Supports only one database for each ORM
 
 ## Supported ORMs and strategies
 
-| ORM          | Deletion | Transaction |
-|:-------------|:---------|:------------|
-| ActiveRecord | Yes      | Yes         |
-| Mongoid      | Yes      | No          |
+| ORM                 | Deletion | Transaction |
+|:--------------------|:---------|:------------|
+| ActiveRecord >= 4.2 | Yes      | Yes         |
+| Mongoid >= 5.0      | Yes      | No          |
 
+mysql2 needs `MULTI_STATEMENTS` flag to be set and requires active_record >= 5.0.0
+
+```yaml
+adapter: mysql2
+flags:
+  - MULTI_STATEMENTS
+```
 
 ## Installation
 
 Add this line to your application's Gemfile: