Added in README

README.md

@@ -1,2 +1,50 @@
-# mibew_slack
-Mibew Slack Plugin
+# Mibew Slack plugin
+
+Provides Slack notifications when initiate a chat
+
+## Installation
+
+1. Get the archive with the plugin sources. At the moment the only option is to build the plugin from sources or grab it from the zip file.
+
+2. Untar/unzip the plugin's archive.
+
+3. Put files of the plugins to the `<Mibew root>/plugins`  folder.
+
+4. Obtain a webhook key from Slack. Go to slack, open your app directory, click on Manage, click on Custom Integrations
+
+5. Click on App Configuration. Choose the channel it should post to, click on Add Incoming Webhook Integration
+
+6. Copy the Webhook URL
+
+7. Add plugins config to plugins structure like below.
+
+    ```yaml
+    plugins:
+        "Mibew:Slack": # Plugin's configurations are described below
+            username: "Username you will post as"
+            channel: "Channel to post in"
+            slack_url: "Webhook URL from Setup Instructions in Slack"
+
+    ```
+
+
+## Plugin's configurations
+
+The plugin can be configured with values in "`<Mibew root>`/configs/config.yml" file.
+
+## Build from sources
+
+There are several actions one should do before use the latest version of the plugin from the repository:
+
+1. Obtain a copy of the repository using `git clone`, download button, or another way.
+2. Install [node.js](http://nodejs.org/) and [npm](https://www.npmjs.org/).
+3. Install [Gulp](http://gulpjs.com/).
+4. Install npm dependencies using `npm install`.
+5. Run Gulp to build the sources using `gulp default`.
+
+Finally `.tar.gz` and `.zip` archives of the ready-to-use Plugin will be available in `release` directory.
+
+
+## License
+
+[Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0.html)