Merge pull request #20 from aholic/dev

fix bug for md5File
add 依赖软件 in readme
use mit license
int -> uint for avoid warning
use InitOnOff
use InitOnOff
add blacklist
add dict/readme.md
ci
add filter singword in keywordextractor.
Merge branch 'dev' of https://github.com/aszxqw/cppjieba into dev