Update README.md

Author: ReferenceType

README.md

@@ -1,7 +1,8 @@
 # P2PVideocall
 Voice-Video Call Wpf Application based on P2PNetwork with protobuf messages.
-Tested and achieved stable calls between 1.204,5 km distance clients
-
+<br/>Tested and achieved stable calls between 1.204,5 km distance clients
+<br/>
+<br/>Pre-Release available https://github.com/ReferenceType/P2PVideocall/releases/tag/v0.1.0-alpha
 ## Features
 - Videocall among connected peers 
 - Persisitent Chat, where chat history loaded on demand as you scroll up