Add bot usage docs

Author: zoffixznet

README.md

@@ -2,6 +2,73 @@
 
 Code for alerts.perl6.org and supporting IRC bot
 
+## POSTING ALERTS
+
+The alerts are posted by addressing the `p6lert` bot. Four commands exist
+
+### `add`
+
+Adds a new alert, using your IRC for `created by` information.
+The bot will give a direct link to it on the site. While
+the direct link will show the alert right away, **it'll take 10 minutes** for
+the alert to show up on the main site's page, on its API endpoints, or to be
+tweeted. This is by-design, to allow for some editing or deleting of the alert,
+if needed.
+
+```
+<Zoffix> p6lert, add some normal alert
+<Zoffix> p6lert, add severity:high some high alert
+<Zoffix> p6lert, add affects:[2017.12 and earlier] some normal alert
+<Zoffix> p6lert, add severity:high affects:[2017.12 and earlier] some high alert
+```
+
+The brackets for `affects` are mandatory and `severity` must come before
+`affects`. Both are optional and `severity` defaults to `normal`, while
+`affects` defaults to an empty string. If you need a reminder, you can always
+issue `help` command to the bot:
+
+```
+<Zoffix> p6lert: help
+<p6lert> Zoffix, https://github.com/perl6/alerts P6lert commands:
+    [insta]?add ALERT, update ID ALERT, delete ID;
+    ALERT format: ['severity:'\S+]? ['affects:['<-[\]]>+']']? ALERT_TEXT
+```
+
+### `instadd`
+
+Exactly the same as `add` command, except it does not have a 10-minute grace
+period and the alert will be distributed and tweeted immediately. This exists
+mostly for debugging and you should always use the `add` command.
+
+```
+<Zoffix> p6lert, instaadd some normal alert
+```
+
+### `update`
+
+Syntax is the same as `add`, except it takes an alert ID as the first argument.
+Updates the alert content. **Note** that omitting `severity` or `affects`
+**WILL NOT** set them to default values and will leave them as they were
+before the update.
+
+```
+<Zoffix> p6lert, update 5 severity:high actually, it's now a high alert
+```
+
+The bot will tell you if this alert was already tweeted.
+
+### `delete`
+
+Takes an alert ID as the argument and deletes it from the database.
+The bot will tell you if this alert was already tweeted. The tweet will NOT
+be deleted by the bot.
+
+```
+<Zoffix> p6lert, delete 5
+```
+
+###
+
 ## DEVELOPMENT
 
 ### Website styles
@@ -10,6 +77,34 @@ The styles are in `static/main.scss`. You'll need to run `./sassify` to
 have [SASS preprocessor](http://sass-lang.com/) watch for changes and
 generate CSS styles for the site.
 
+### IRC Bot Admins
+
+Admins are allowed to post/update/delete alerts. Their hosts are stored in
+`/home/p6lert/alerts/secret.json`, in `admin-list` property. When adding new
+hosts, please only add registered Freenode users (those who have a
+[cloak](https://freenode.net/kb/answer/cloaks) are even better, since we can
+see to whom the host belongs)
+
+### Infrastructure
+
+The server and bot are hosted on hack with Apache on www server reverse-proxying
+all the requests. The repo checkout lives in
+`/home/p6lert/alerts/` and two services exist: `p6lert-web` and `p6lert-irc`
+
+To pull new changes, log in to hack, then run:
+
+```bash
+sudo su -l p6lert
+cd alerts/
+git pull
+logout
+sudo service p6lert-web restart
+sudo service p6lert-irc restart
+```
+
+The alerts database is in `/home/p6lert/alerts/alerts.sqlite.db` SQLite file.
+
+Zoffix has the keys to `@p6lert` Twitter account.
 
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