Merge branch 'master' into develop

README.md

@@ -4,6 +4,8 @@
 
 AirDC++ Web Client is a locally installed application, which is designed for frequent sharing of files or directories within groups of people in a local network or over internet. The daemon application can be installed on different types of systems, such as on file servers and NAS devices.
 
+The application uses [Advanced Direct Connect](https://en.wikipedia.org/wiki/Advanced_Direct_Connect) protocol, which allows creating file sharing communities with thousands of users. The application itself is highly optimized even for extreme use cases: a single client can be used to share more than 10 million files or hundreds of terabytes of data.
+
 ### Key functionality
 
 - Responsive [web user interface](https://github.com/airdcpp-web/airdcpp-webui) written in [React.js](https://facebook.github.io/react/)
@@ -12,7 +14,7 @@ AirDC++ Web Client is a locally installed application, which is designed for fre
 - Save files on disk or view them via the browser
 - Chatting capabilities (group and private chat)
 - Browse directories shared by other users with a simple file browser interface
-- [Extension support](https://github.com/airdcpp-web/airdcpp-extension-js)
+- [Extension support](https://github.com/airdcpp-web/airdcpp-extensions) using [Node.js](https://nodejs.org/en/) (+others)
 - [Web API (HTTP REST and WebSockets)](http://apidocs.airdcpp.net)
 
 ## Download