fix appendix
fix issue #40, fix onehalfspacing issue
fix issue #40, fix onehalfspacing issue (for report)
update zjutmain.pdf
Merge pull request #41 from unlucky/onehalfspacing

调整到1.5倍行距，修补#40
修改文章标题为三号字体
撤销「「开题报告」中「参考文献」修正为「主要参考文献」，与普通章节对等」，see #42
merge 调整页边距