Merge pull request #200 from skyerown/master

修复stop words处理未考虑"\r"导致不能正常匹配的问题。
version update'
Merge pull request #201 from skyerown/master

为关键字提取函数增加词性过滤功能
Update __init__.py

calc的idx参数没用
Merge pull request #202 from nomaka/patch-1

Update __init__.py
Merge pull request #2 from fxsjy/master

更新