README.md in wrapbox-0.6.0 vs README.md in wrapbox-0.7.0

@@ -33,11 +33,11 @@
       memory: 1024
       essential: true
 
 docker:
   runner: docker
-  rm: true
+  keep_container: true
   container_definitions:
     - image: joker1007/wrapbox
       cpu: 512
       memory: 1024
 
@@ -116,10 +116,10 @@
 
 ### for docker
 | name                  | desc                                                        |
 | --------------------  | ----------------------------------------------------------- |
 | container_definitions | only use `image`, `cpu`, `memory`, and `memory_reservation` |
-| rm                    | If true, add `--rm` to cmd options                          |
+| keep_container        | If true, doesn't delete the container when the command ends |
 | use_sudo              | If true, invoke `sudo docker` command                       |
 
 ## API
 
 #### `run(class_name, method_name, args, container_definition_overrides: {}, environments: [], task_role_arn: nil, cluster: nil, timeout: 3600 * 24, launch_timeout: 60 * 10, launch_retry: 10, retry_interval: 1, retry_interval_multiplier: 2, max_retry_interval: 120, execution_retry: 0)`