Create pipes manpage

Fix for the manual request (issue #2). I didn't want to meddle with your main program because I'm not sure how you'd want to integrate a manpage into the installation process. To see this in its man format just type "man ./pipes".
![screenshot - 170314 - 18 10 26](https://f.cloud.github.com/assets/5920259/2439696/7a1268f0-adff-11e3-9ba8-f505970eb9aa.png)