Add beta information.

Author: ScIT-Raphael

README.md

@@ -1,6 +1,8 @@
 [HestiaCP Control Panel](https://www.hestiacp.com/)
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+** Hestia Control Panel is in Beta Release, please take care if you want to use it for productive systems! **
+
 * HestiaCP is a fork of VestaCP.
 * Main purpose of HestiaCP is to be more secure, better optimized and up to date.
 * HestiaCP is an open source, lightweight hosting control panel.