Add compatibility documentation (#164)

diff --git a/README.md b/README.md
index 49a9433..2d8192c 100644
--- a/README.md
+++ b/README.md
@@ -154,6 +154,14 @@
 
 </details>
 
+# Compatibility
+
+SkyWalking CLI and SkyWalking OAP communicate with different query version, here is a summary of the compatible version of both.
+
+| SkyWalking CLI | OAP Server Version |
+|----------------|---------------|
+| \> = 0.11.0    | \> = 9.2.0    |
+
 # Contributing
 
 For developers who want to contribute to this project, see [Contribution Guide](CONTRIBUTING.md)