update to granular permissions

Author: pichsenmeister

src/verifySignature.js

@@ -5,7 +5,6 @@ const isVerified = (req) => {
   const signature = req.headers['x-slack-signature'];
   const timestamp = req.headers['x-slack-request-timestamp'];
   const hmac = crypto.createHmac('sha256', process.env.SLACK_SIGNING_SECRET);
-  console.log('signature', signature)
   const [version, hash] = signature.split('=');
 
   // Check if the timestamp is too old