X-ray 2.0 version new api like Dataset

[imliuruiqi]

X-ray 2.0 version brings new api like Dataset, and I just noticed that this package still using 1.0 version. Would you consider update from 1.0 to 2.0?
Here's api docs you can refer: XRAY v2.0

[gonchik]

@imliuruiqi it will be great if someone will send PR :)