Update README.MD

Kaizhe · web-flow · commit d49497573307 · 2019-03-05T12:18:40.000-08:00
diff --git a/README.MD b/README.MD
@@ -18,6 +18,7 @@
 - allowPrivilegeEscalation
 - allowedCapabilities
 - allowedHostPaths
+  - readOnly
 - hostIPC
 - hostNetwork
 - hostPID
