docs: Document archival status (#81)

README.md

@@ -3,6 +3,12 @@
 [Snapshot debugger](https://github.com/GoogleCloudPlatform/snapshot-debugger/)
 agent for Java 7, Java 8 and Java 11.
 
+## Project Status: Archived
+
+This project has been archived and is no longer supported. There will be no
+further bug fixes or security patches. The repository can be forked by users
+if they want to maintain it going forward.
+
 ## Overview
 
 Snapshot Debugger lets you inspect the state of a running cloud application, at
@@ -35,11 +41,6 @@ Snapshot Debugger consists of 3 primary components:
     [`snapshot-dbg-cli`](https://pypi.org/project/snapshot-dbg-cli/) and a
     [VSCode extension](https://github.com/GoogleCloudPlatform/snapshot-debugger/tree/main/snapshot_dbg_extension)
 
-## Getting Help
-
-1.  File an [issue](https://github.com/GoogleCloudPlatform/cloud-debug-java/issues)
-1.  StackOverflow: http://stackoverflow.com/questions/tagged/google-cloud-debugger
-
 ## Installation
 
 The easiest way to install the Java debugger agent is to download the pre-built