docs: update readme to include OpenCode example (#560)

closes: anomalyco/opencode#4377

---------

Co-authored-by: Sebastian Benz <sbenz@google.com>

Author: rekram1-node

README.md

@@ -241,6 +241,25 @@ Or, from the IDE **Activity Bar** > `Kiro` > `MCP Servers` > `Click Open MCP Con
 
 </details>
 
+<details>
+  <summary>OpenCode</summary>
+
+Add the following configuration to your `opencode.json` file. If you don't have one, create it at `~/.config/opencode/opencode.json` (<a href="https://opencode.ai/docs/mcp-servers">guide</a>):
+
+```json
+{
+  "$schema": "https://opencode.ai/config.json",
+  "mcp": {
+    "chrome-devtools": {
+      "type": "local",
+      "command": ["npx", "-y", "chrome-devtools-mcp@latest"]
+    }
+  }
+}
+```
+
+</details>
+
 <details>
   <summary>Qoder</summary>