moved the coffeescript extension over from .cs to .coffee -- let's leave C# in peace. Changed array comprehensions to always return their mapped result, even when unassigned

documentation/cs/intro.cs

@@ -1,3 +0,0 @@
-# CoffeeScript on the left, JS on the right.
-
-square: x => x * x.

documentation/cs/punctuation.cs

@@ -1,11 +0,0 @@
-# Comments start with hash marks.
-
-# Periods mark the end of a block.
-left_hand: if raining then umbrella else parasol.
-
-# To signal the beginning of the next expression,
-# use "then", or a newline.
-left_hand: if raining
-  umbrella
-else
-  parasol.

documentation/index.html.erb

@@ -3,7 +3,7 @@
   def code_for(file, executable=false)
     @stripper ||= /(\A\(function\(\)\{\n|\}\)\(\);\Z|^  )/
     return '' unless File.exists?("documentation/js/#{file}.js")
-    cs = File.read("documentation/cs/#{file}.cs")
+    cs = File.read("documentation/coffee/#{file}.coffee")
     js = File.read("documentation/js/#{file}.js").gsub(@stripper, '')
     cshtml = Uv.parse(cs, 'xhtml', 'coffeescript', false, 'idle', false)
     jshtml = Uv.parse(js, 'xhtml', 'javascript', false, 'idle', false)
@@ -92,11 +92,11 @@ gem install coffee-script</pre>
 
     <p>
       Installing the gem provides the <tt>coffee-script</tt> command, which can
-      be used to compile CoffeeScript <tt>.cs</tt> files into JavaScript, as
-      well as debug them. In conjunction with 
+      be used to compile CoffeeScript <tt>.coffee</tt> files into JavaScript, as
+      well as debug them. In conjunction with
       <a href="http://narwhaljs.org/">Narwhal</a>, the <tt>coffee-script</tt>
-      command also provides direct evaluation and an interactive REPL. 
-      When compiling to JavaScript, <tt>coffee-script</tt> writes the output 
+      command also provides direct evaluation and an interactive REPL.
+      When compiling to JavaScript, <tt>coffee-script</tt> writes the output
       as <tt>.js</tt> files in the same directory by default, but output
       can be customized with the following options:
     </p>
@@ -105,7 +105,7 @@ gem install coffee-script</pre>
       <tr>
         <td width="25%"><code>-i, --interactive</code></td>
         <td>
-          Launch an interactive CoffeeScript session. 
+          Launch an interactive CoffeeScript session.
           Requires <a href="http://narwhaljs.org/">Narwhal</a>.
         </td>
       </tr>
@@ -187,9 +187,9 @@ gem install coffee-script</pre>
     </p>
 
     <pre>
-coffee-script path/to/script.cs
-coffee-script --watch --lint experimental.cs
-coffee-script --print app/scripts/*.cs > concatenation.js</pre>
+coffee-script path/to/script.coffee
+coffee-script --watch --lint experimental.coffee
+coffee-script --print app/scripts/*.coffee > concatenation.js</pre>
 
     <h2>Language Reference</h2>
 
@@ -442,18 +442,18 @@ coffee-script --print app/scripts/*.cs > concatenation.js</pre>
     </ul>
 
     <h2 id="change_log">Change Log</h2>
-    
+
     <p>
       <b class="header" style="margin-top: 20px;">0.1.3</b>
-      The <tt>coffee-script</tt> command now includes <tt>--interactive</tt>, 
+      The <tt>coffee-script</tt> command now includes <tt>--interactive</tt>,
       which launches an interactive CoffeeScript session, and <tt>--run</tt>,
       which directly compiles and executes a script. Both options depend on a
       working installation of Narwhal.
-      The <tt>aint</tt> keyword has been replaced by <tt>isnt</tt>, which goes 
+      The <tt>aint</tt> keyword has been replaced by <tt>isnt</tt>, which goes
       together a little smoother with <tt>is</tt>.
       Quoted strings are now allowed as identifiers within object literals: eg.
       <tt>{"5+5": 10}</tt>.
-      All assignment operators now use a colon: <tt>+:</tt>, <tt>-:</tt>, 
+      All assignment operators now use a colon: <tt>+:</tt>, <tt>-:</tt>,
       <tt>*:</tt>, etc.
     </p>