implement random hits and repair subsystems

Signed-off-by: Tom Fitch <tfitch@ebay.com>
Merge branch 'master' of https://github.com/AgileInstitute/Alpha

Signed-off-by: Tom Fitch <tfitch@ebay.com>

Conflicts:
	src/main/java/com/ebay/csd/superstartrek/Ship.java
	src/test/java/com/ebay/csd/superstartrek/test/ShipTest.java