Update community supported README: legal disclaimer (#91)

* Update community supported README: legal disclaimer

* Removed MM staff members as maintainers

* Update README.md

README.md

@@ -1,13 +1,14 @@
+# Disclaimer
+
+**This repository is community supported and not maintained by Mattermost. Mattermost disclaims liability for integrations, including Third Party Integrations and Mattermost Integrations. Integrations may be modified or discontinued at any time.**
+
 # Mattermost Custom Attributes Plugin 
 
 [![Build Status](https://img.shields.io/circleci/project/github/mattermost/mattermost-plugin-custom-attributes/master)](https://circleci.com/gh/mattermost/mattermost-plugin-custom-attributes)
 [![Code Coverage](https://img.shields.io/codecov/c/github/mattermost/mattermost-plugin-custom-attributes/master)](https://codecov.io/gh/mattermost/mattermost-plugin-custom-attributes)
 [![Release](https://img.shields.io/github/v/release/mattermost/mattermost-plugin-custom-attributes)](https://github.com/mattermost/mattermost-plugin-custom-attributes/releases/latest)
 [![HW](https://img.shields.io/github/issues/mattermost/mattermost-plugin-custom-attributes/Up%20For%20Grabs?color=dark%20green&label=Help%20Wanted)](https://github.com/mattermost/mattermost-plugin-custom-attributes/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3A%22Up+For+Grabs%22+label%3A%22Help+Wanted%22)
 
-**Maintainer:** [@marianunez](https://github.com/marianunez)
-**Co-Maintainer:** [@larkox](https://github.com/larkox)
-
 This plugin adds custom attributes to users in your Mattermost instance.  You can specify an Attribute, and then specify specific users, teams or groups which will display that attribute on their public profile - so other users can identify them easily.  This can be useful when there are Team Leads, Timezones, etc. and makes it easy to show who is on a particular team or Project.  
 
 Currently the plugin only exposes the specified attributes in the user profile popover, but this plugin could be extended to allow displaying attributes elsewhere in the user interface, such as badges next to usernames.