client/#75 - Added Slack module documentation

website/docs/module_slack.md

@@ -0,0 +1,55 @@
+---
+id: module_site_sync
+title: Slack Integration Administration
+sidebar_label: Slack
+---
+
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+
+This module allows configuring profiles(when to trigger, for which combination of task, host and family)
+and templates(could contain {} placeholder) to send notification to Slack channel(s)
+whenever configured asset type is published.
+
+
+## App installation
+
+Slack application must be installed to company's Slack first. 
+
+Please locate `openpype/modules/slack/manifest.yml` file in deployed OpenPype installation and follow instruction at
+https://api.slack.com/reference/manifests#using
+
+
+## System Settings
+
+To use notifications, *Slack Notifications* needs to be enabled globally in **OpenPype Settings/System/Modules/Slack Notifications**.
+
+![Configure module](assets/slack_system.png)
+
+
+## Project Settings
+
+### Token
+Most important for module to work is to fill authentication token 
+```Project settings > Slack > Publish plugins > Token```
+
+This token should be available after installation of the app in the Slack dashboard.
+It is possible to create multiple tokens and configure different scopes for them.
+
+![Get token](assets/slack_token.png)
+
+### Profiles
+Profiles are used to select when to trigger notification. One or multiple profiles
+could be configured, `Families`, `Task names` (regex available), `Host names` and host combination is needed.
+
+Eg. If I want to be notified when render is published from Maya, setting is:
+
+- family: 'render'
+- host: 'Maya'
+
+### Channel
+Message could be delivered to one or multiple channels, by default app allows Slack bot
+to send messages to 'public' channels (eg. bot doesn't need to join the channel first).
+
+![Configure module](assets/slack_system.png)