Added first info in README

README.md

 # CssLsd
 
+CssLsd is a Chromium Extension which allows for interactively modifying
+the style of web pages using MIDI messages, Keyboard presses or Audio input
+features.
+
+
+## Setup 
+
+- Download or Clone CssLsd
+- Start Chromium
+- Type chrome://extensions in the address bar
+- Click "Load unpacked extension" and select the csslsd folder
+- Now the extension should appear in the menu bar
+
+
+## Usage
+
+TODO
+
+