add return all game method in planningpokermodel; add identify method to game; change the constructor of game by changing the type of parameter passed into the game class; create a new class UserInfo which stores the username and information of that user (IM, email) and replace all user type in Game, Estimate; create overload method for changeCreator, isCreator, isParticipant, hasUser; add some methods to support functionality
Fix merge conflicts and add tests which need to be recreated
Add time fields and related methods in Game.java, add fields to see if user would like to receive notification in UserInfo.java, fixed throw exception issue in Estimate.java
Modify constructor for UserInfo, add comments in Game
Modify .gitignore to ignore javadoc stuff