Merge pull request #1 from fxsjy/master

使用更明确的表达
Merge pull request #3 from fxsjy/master

捕获明确的错误
Merge pull request #48 from cloudaice/cloudaice-dev

格式化了demo文件，添加了jieba_test.py单元测试文件
Merge pull request #5 from fxsjy/master

merge master from fxsjy