Update Readme

Readme.md

 # GazeClient
 
-A javascript library to subscribe to local gaze data streams in the OTH/UR Eyetracking Classroom. 
+A Javascript library to subscribe to local gaze data streams in the OTH/UR Eye-Tracking Classroom. Packed and compressed library files can be found in `/build`.
+
+GazeClient connects to a running [GazeServer](https://lab.las3.de/gitlab/eye-tracking-classroom/gaze-server.cs) instance on the local machine and publishes gaze data from the currently tracked user. Websockets are used to connect client and server.
 
 ## Usage
 
-**Add the library:**
+**Add the library to your application:**
 
 ```
 <script type="application/javascript" src="gazeclient.js"></script>
@@ -19,12 +21,19 @@ gclient.addEventListener("gazeDataAvailable", function onGazeDataAvailable(event
 });
 ```
 
-**Connect to a running gaze data server:**
+**Connect to a running gaze data server by providing a valid URL:**
 
 ```
 gclient.connect("ws://localhost:8001/gaze");
 ```
 
+### Events
+
+| Event | Type  | Description  | Data |
+|---|---|---|---|
+| ConnectionOpenedEvent  | connectionclosed  | Invoked when client successfully connected to server.  | - |
+| ConnectionClosedEvent  | connectionclosed  | Invoked when client lost connection to server. | - |
+| DataEvent | dataavailable  | Invoked when new gaze data from eye-tracker is available.  | On-display (x,y) coordinates for both eyes |
 
 ## Build
 
@@ -32,4 +41,4 @@ gclient.connect("ws://localhost:8001/gaze");
 
 - node.js
 
-To build a current version of this library run `npm install` and `npm run build`. The client library is packed with [rollup](https://rollupjs.org/guide/en/) and copied to `build/` and `demo/`. 
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+To build a current version of this library run `npm install` and `npm run build`. The client library is packed with [rollup](https://rollupjs.org/guide/en/), compress with [uglify-es](https://github.com/mishoo/UglifyJS2/tree/harmony) and copied to `build/` and `demo/`. 
\ No newline at end of file