update requirement for add, discovered bug in save, to be rectified
update: save and load bug rectified
Merge remote-tracking branch 'origin/Zhengyang' into SWW

Conflicts:
	SparkMoWare/logic/Assignment.java
	SparkMoWare/logic/SparkMoVare.java
	bin/logic/SparkMoVare.class

Conflicts should be resolved.
Missing commit to previous merging