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README.md

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 # whiteboard
-Collaborative Whiteboard / Sketchboard
+This is a lightweight collaborative Whiteboard witch can easily be customized...
+
+![start](./doc/start.png)
+
+## Some Features
+* Showing remote user cursors while drawing
+* Undo function for each user
+* Drag & Drop Images to Whiteboard from PC and Browsers
+* Copy & Paste Images from Clipboard
+* Resize, Move & Draw Images to Canvas or Background
+* Save Whiteboard to Image and JSON
+* Draw angle lines by pressing "shift" while drawing (with line tool)
+* Draw square by pressing "shift" while drawing (with rectangle tool)
+
+## Install the App
+You can run this app with and without docker
+### Without Docker
+1. install the latest NodeJs
+2. Clone the app
+3. Run `npm i` inside the folder
+4. Run `node server.js`
+5. Surf to http://YOURIP:8080
+
+### With Docker
+1. `docker run -d -p 8080:8080 rofl256/whiteboard`
+2. Surf to http://YOURIP:8080
+
+## Things you may want to know
+* Whiteboards are gone if you restart the Server, so keep that in mind (or save your whiteboard)
+* This is just a sample layout to show the functions available
+* You shoud be able to customize without ever toutching the whiteboard.js (take a look at index.html & main.js)