Fix & update package

[zoheirkhonyagar]

• Fix batchClassification url
• Replace callback with promise
• Update README
• Add examples

[DrEhsan]

Good job bro 👍

To do:

it might be useful to have an api in server side for uploading our data sets using api
also making modules might be useful if we could create or edit using api
for next step i prefer make module chooser and initialize it inside vakavic constructor class

[zoheirkhonyagar]

Thank you bro this is a good suggestion,
I like that ;)