[ci skip] Update config/migration.php comments
Close #3951
diff --git a/application/config/migration.php b/application/config/migration.php
index 083bf28..4b585a6 100644
--- a/application/config/migration.php
+++ b/application/config/migration.php
@@ -21,12 +21,12 @@
| Migration file names may be based on a sequential identifier or on
| a timestamp. Options are:
|
-| 'sequential' = Default migration naming (001_add_blog.php)
+| 'sequential' = Sequential migration naming (001_add_blog.php)
| 'timestamp' = Timestamp migration naming (20121031104401_add_blog.php)
| Use timestamp format YYYYMMDDHHIISS.
|
-| If this configuration value is missing the Migration library defaults
-| to 'sequential' for backward compatibility.
+| Note: If this configuration value is missing the Migration library
+| defaults to 'sequential' for backward compatibility with CI2.
|
*/
$config['migration_type'] = 'timestamp';