README.md in embulk-output-groonga-0.1.1 vs README.md in embulk-output-groonga-0.1.2

@@ -14,9 +14,11 @@
 - **table**: output table name (string, required)
 - **key_column**: this column convert column name into _key (string, required)
 - **host**: groonga server name (string, rerquired)
 - **port**: groonga port (integer, default: 10041)
 - **protocol**: connection protocol gqtp or http, (string, default: http )
+- **user**: groonga login username(http only) (string, default: nil)
+- **password**: groonga login password(http only) (string, default: nil)
 
 
 ## Installation
 
 * install embulk command isself.