adding documentation for --stdio

index.html

@@ -235,7 +235,7 @@ cubed_list = (function() {
     </h2>
 
     <p>
-      The CoffeeScript compiler is written in pure CoffeeScript, using a 
+      The CoffeeScript compiler is written in pure CoffeeScript, using a
       <a href="http://github.com/jashkenas/coffee-script/blob/master/src/grammar.coffee">small DSL</a>
       on top of the <a href="http://github.com/zaach/jison">Jison parser generator</a>, and is available
       as a <a href="http://nodejs.org/">Node.js</a> utility. The core compiler however,
@@ -311,6 +311,14 @@ sudo bin/cake install</pre>
           conjunction with <tt>--watch</tt>)
         </td>
       </tr>
+      <tr>
+        <td><code>-s, --stdio</code></td>
+        <td>
+          Pipe in CoffeeScript to STDIN and get back JavaScript over STDOUT.
+          Good for use with processes written in other languages. An example:<br />
+          <tt>cat src/cake.coffee | coffee -s</tt>
+        </td>
+      </tr>
       <tr>
         <td><code>-e, --eval</code></td>
         <td>
@@ -1624,7 +1632,7 @@ task(<span class="String"><span class="String">'</span>test<span class="String">
       <span id="change_log" class="bookmark"></span>
       Change Log
     </h2>
-    
+
     <p>
       <b class="header" style="margin-top: 20px;">0.5.1</b>
       Improvements to null soaking with the existential operator, including