Cleaning README

README.md

@@ -18,25 +18,24 @@ Node-zbar can then be installed via NPM
 
     npm install zbar
 
-## Istallation
 
-Currently node-zbar watches for QRCodes using the specified input device.
-
-    zbar.watch
-
-First, require the module
+Then, require the module
 
     var zbar = require('zbar');
 
 
 ## Usage
+
     zbar.watch(device, [options], listener)
 
 Watch for data on device. `device` is a path to a supported webcam device. For example `/dev/video0`
 
 The second argument is optional. The options if provided should be an object. The list of available options are as following:
+
 `width` - scale the width of the sampled image
+
 `height` - scale the width of the sampled image
+
 `dataType` - can be `raw` or `xml`. default is `raw`
 
 The listener callback gets two arguments (error, data). Data is the data returned from a barcode.