release 0.3.0

Signed-off-by: Outsider <outsideris@gmail.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "slack-invite-automation",
-  "version": "0.2.0",
+  "version": "0.3.0",
   "private": true,
   "scripts": {
     "start": "node ./bin/www"