Update README.md, as order of network types isn't this clear yet. It will...

Update README.md, as order of network types isn't this clear yet. It will depend on the project part's scope. 

documentation/design-documentation/README.md

@@ -2,8 +2,7 @@
 
 The project Beachhead has the goal to design, implement, and test a minimalist 
 network controller that is able to provision, to manange and to control networks
-based on Ethernet, Internet Protocol and optical WAN (in descending order of
-priority). 
+based on Ethernet, Internet Protocol and optical WAN. 
 
 We use the term network controller, as the outcome does not have to be a SDN
 controller per se. Such a network controller may be used in settings where there