Add multiplayer through menu. #7 #14

* Add check to see if services are available to ease coding without games for windows live (Get this guys, we'll need it later!).
Merge branch 'input' of ssh://github.com/bjorfoss/XNAX1 into input
Add network through menu. #7 #14

* Add rough homemade check to see if game services are available for those without games for windows marketplace (Get it guys, we'll need it later!).

* Add new ship - the Eightwing. #8