Update README.md

README.md

@@ -21,9 +21,11 @@ https://github.com/inviqa/k8s-project-cluster/blob/0.1.x-dev/docs/cluster-manage
 
 ## How to test?
 There are two modes of this harness: static (for CI environment) and dynamic (for local environment).
+Static mode is a fixed file system, and dynamic uses mutagen to sync file changes with the console and php-fpm containers.
+
 You can test both of them using below command:
 ```sh
 .ci/test static
 .ci/test dynamic
 ```
-It will create a new directory at `.ci/tmp-test` that will compile the harness and find any twig compilation errors.
+It will create a new directory at `.ci/tmp-test` that will compile the harness and find any twig compilation errors.