clarify in README to use web app

README.md

@@ -1,6 +1,6 @@
 a flood of unnecessary sev2 notifications from a Zapier bot ruining your entire life?
 
-Try installing this [Tampermonkey](https://www.tampermonkey.net/) script.
+Use the slack web app and install this [Tampermonkey](https://www.tampermonkey.net/) script.
 
 For the full app (tm) experience, run it in chrome like:
 `nohup google-chrome --app=https://app.slack.com &`

foz.user.js

@@ -13,6 +13,7 @@
 
 //going to eventually want to check if the terraform-support is highlighted, probably. We'll see.
 
+// At present, this filtration is specific to app generated messages.
 const removeMessages = () => {
     const messages = Array.from(document.querySelectorAll('[data-qa="virtual-list-item"]'));
     const haveButtons = messages.filter(message => message.querySelector('button'));

nohup.out

@@ -0,0 +1,2 @@
+Opening in existing browser session.
+Opening in existing browser session.