Added a small translator primer; copied from the text I wrote for the babhurd qemu image -> hereby the sourcecode is assigned :)

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+Small examples on using translators
+===================================
+
+## Intro
+
+The Hurd has some unique capabilities, and we created this simple image 
+to enable you to easily try two of them: 
+
+* The simplest of translators: Hello World!
+* Transparent FTP
+
+### Hello World
+
+To try out the simplest of translators, you can go the following simple steps: 
+
+	$ cat hello  
+	$ setrans hello /hurd/hello  
+	$ cat hello  
+	"Hello World!"  
+	$ settrans -g hello  
+	$ cat hello  
+
+What you do with these steps is first verifying that the file "hello" is empty. 
+
+Then you setup the translator /hurd/hello in the file/node hello. 
+
+After that you check the contents of the file, and the translator returns "Hello World!". 
+
+To finish it, you tell the translator to go away from the file "hello" via "settrans -g hello" and verify that now the file is empty again. 
+
+### Transparent FTP
+
+We already setup a a transparent FTP translator for you at /ftp: 
+
+With it you can easily access public FTP via the file system, for example the one from the GNU project: 
+
+	$ ls /ftp://ftp.gnu.org/
+
+But you can also do this very easily yourself: 
+
+	$ # Setup the translator on the node ftp:  
+	$ settrans -c ftp: /hurd/hostmux /hurd/ftpfs /
+
+and you can access FTP sites via the pseudo-directory ftp:, for example with 
+
+	$ ls ftp://ftp.gnu.org/
+
+What you do here is setting up the translator /hurd/hostmux on ftp: and passing it the translator /hurd/ftpfs to use for resolving accesses as well as / as additional path component. 
+
+
+These were only two basic usages of translators on the Hurd. We're sure you'll quickly see many other ways to use this. 
+
+As a last comment: You can setup a translator on any node you have access to, so you can for example mount any filesystems as normal user. 
+
+You might currently be logged in as root, but you could just as well do the same as normal user. 
+
+Why don't you try it out?