Add basic Chinese support

[astropeak]

Hi,

I added basic support for Chinese. This modification is straightforward since the code already supports Japanese.

The word tokenizer is provided by jieba, a widely used one for Chinese word segmentation.

I found the stopwords list at
https://raw.githubusercontent.com/6/stopwords-json/master/dist/zh.json

I only tried it a little, but the results seem quite good.

[miso-belica]

Thanks a lot :)

[ArtificialNotImbecile]

This only works on --url option, but when I use --file_path option, it returns nothing.

[miso-belica]

@ArtificialNotImbecile Hi, that's weird. Can you please report and issue with URL and commands which is working and attached file and command which is not?

[ArtificialNotImbecile]

@miso-belica I can not reproduce my bug, so it most likely my environment has some problem. I just update my Ubuntu 16.04 today and it works perfectly fine for both Chinese and English in both --url and --file_path :)