Merge pull request #13 from daydayfree/dev

添加travis测试环境
do not need main in test
Merge pull request #14 from daydayfree/dev

重构model层
Merge pull request #15 from daydayfree/dev

重构view层第一步
add test framework
Merge pull request #17 from fyruicao/fix_test

添加测试框架
modify unnitest
bugfix
fix typo
Fix import error