add boilerpalte

Author: olegs-codefresh

stable/send-slack-message/README.md

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+image: codefresh/plugin-publish-helm-chart
+tag: 0.0.1
+version: 0.1.0
+description: Send message to slack channel
+keywords:
+  - slack
+home: https://github.com/codefresh-io/slack-message-sender
+sources:
+  - https://github.com/codefresh-io/slack-message-sender
+maintainers: # (optional)
+  - name: Oleg Sucharevich
+    email: [email protected]
+icon: https://upload.wikimedia.org/wikipedia/commons/7/76/Slack_Icon.png
+envs:
+  - name: WEBHOOK_URL
+    type: required
+    description: Url to the channel
+  - name: DEBUG
+    description: print verbose install output

stable/send-slack-message/plugin.yaml

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+# Codefresh Helm Plugin
+
+Use Codefresh Slack plugin to send a message to a channel.
+
+## Usage
+
+
+```yaml
+---
+version: '1.0'
+
+steps:
+
+  ...
+
+  publish_to_repo:
+    image: codefresh/slack-message-sender
+
+  ...
+
+```
+
+## Environment Variables
+
+- **required** `WEBHOOK_URL` - Url to the channel. Slack official [docs](https://gophers.slack.com/apps/new/A0F7XDUAZ-incoming-webhooks)
+- `DEBUG` - print verbose output