Merge pull request #18 from jrahm/master

got compilign
Done
Merge branch 'master' of https://github.com/nbroeking/Risk
Hello
Merge pull request #19 from jrahm/master

Added -lrt
Merge pull request #20 from jrahm/master

Added guard for Apple
Hi
Done bitches
added final class diagram
Merge branch 'master' of github.com:jrahm/Risk
Merge branch 'master' of github.com:nbroeking/Risk