update README [ci skip]

Author: ctalkington

README.md

@@ -10,18 +10,23 @@ a streaming interface for archive generation
 npm install archiver --save
 ```
 
-You can also use `npm install https://github.com/archiverjs/node-archiver/archive/master.tar.gz` to test upcoming versions.
+## Usage
 
-## Archiver
-
-#### create(format, options)
+```js
+var archiver = require('archiver');
+var archive = archiver.create('zip', {}); // or archiver('zip', {});
+```
 
-Creates an Archiver instance based on the format (zip, tar, etc) passed. Parameters can be passed directly to `Archiver` constructor for convenience.
+## API
 
-### Instance Methods
+#### Transform
 
 Inherits [Transform Stream](http://nodejs.org/api/stream.html#stream_class_stream_transform) methods.
 
+#### create(format, options)
+
+Creates an Archiver instance based on the format (zip, tar, etc) passed. Parameters can be passed directly to `Archiver` constructor for convenience.
+
 #### abort()
 
 Aborts the archiving process, taking a best-effort approach, by:
@@ -96,6 +101,10 @@ Finalizes the instance and prevents further appending to the archive structure (
 
 Returns the current byte length emitted by archiver. Use this in your end callback to log generated size.
 
+#### use(plugin)
+
+Add a plugin to the middleware stack. Currently this is designed for passing the module to use (replaces registerFormat/setFormat/setModule)
+
 ## Events
 
 Inherits [Transform Stream](http://nodejs.org/api/stream.html#stream_class_stream_transform) events.