cleared up the part about node as a runtime environment (V8) and a li…

…brary, as suggested by Jann Horn (http://thejh.myopenid.com/) in http://nodebeginner.org/#comment-187081251

index.html

@@ -293,17 +293,21 @@ <h3>Server-side JavaScript</h3>
 			<p>
 				In order to execute the JavaScript you intend to run in the
 				backend, it needs to be interpreted and, well, executed.
-				This is what node.js does. Plus, it ships with a lot of
-				useful modules, so you don't have to write everything
-				from scratch, like for example something that outputs a
-				string on the console.
+				This is what node.js does, by making use of Google's V8 VM, the
+				same runtime environment for JavaScript that used in Google
+				Chrome.
 			</p>
 			<p>
-				Thus, node.js is really two things: a runtime
-				environment and a library.
+				Plus, node.js ships with a lot of useful modules, so you don't
+				have to write everything from scratch, like for example
+				something that outputs a string on the console.
 			</p>
 			<p>
-				In order to make use of them, you need to install node.
+				Thus, node.js is really two things: a runtime environment and a
+				library.
+			</p>
+			<p>
+				In order to make use of these, you need to install node.
 				Instead of repeating the process here, I kindly ask you to
 				visit
 				<a href="https://github.com/joyent/node/wiki/Installation"