checkstyle fixes

added javadoc comments
Merge branch 'master' of https://github.com/9124SAVOIAD/SimSys
Addition of Sequence class to gamespecification package to bring that into the spec, per the spec document. Game.xsd has been updated accrodingly. Structure.java updated to fix an off-by-one error. For instructions on how to use Sequence when working on your respecive components, please see the documentation in the class file. Additions made to Transition.java to specifify order of output in the xml file.