修改测试用例，及spell语法规范
Merge branch 'master' of https://github.com/JellyJollyTeam/Spell

Conflicts:
	src/main/java/cn/edu/seu/cose/jellyjolly/spell/Quiz.java
	src/main/java/cn/edu/seu/cose/jellyjolly/spell/parser/Interpretation.java
	src/test/resources/cn/edu/seu/cose/jellyjolly/spell/sample.spell
Merge branch 'master' of https://github.com/JellyJollyTeam/Spell