[ts-api] Update readme and example (#356)

## Summary

* Published dev package
* Updated readme
* Updated example to use published version
 
# How was it tested?

`node index.js` in example dir.

---------

Signed-off-by: Mike Landau <mikeland86@gmail.com>
Co-authored-by: Greg Curtis <greg.curtis@jetpack.io>

api/ts/README.md

@@ -1,5 +1,7 @@
 # Jetify API TypeScript Client
 
+**Warning:** this client is currently in development and subject to change.
+
 ## Usage
 
 ```bash

api/ts/devbox.json

@@ -8,7 +8,12 @@
         "scripts": {
             "build": "pnpm run build",
             "lint": "pnpm run lint",
-            "fmt": "pnpm run fmt"
+            "fmt": "pnpm run fmt",
+            "typecheck": "pnpm run typecheck",
+            // Run all checks before publishing the package
+            "check": "devbox run typecheck && devbox run lint && devbox run fmt",
+            // Publish the package to the npm registry. Access token is required.
+            "publish": "devbox run check && pnpm publish --access public $@",
         }
     }
 }

api/ts/examples/create-sandbox/package.json

@@ -14,6 +14,6 @@
     "@bufbuild/protobuf": "^1.10.0",
     "@connectrpc/connect": "^1.4.0",
     "@connectrpc/connect-web": "^1.4.0",
-    "@jetify/client": "link:../../dist"
+    "@jetify/client": "0.1.0-dev"
   }
 }