Add support to cursor pagination arguments

[mrsarm]

• Add support to cursor pagination arguments: limit and skip.
• Solves issue #30.

Eg.:

db.getCollection('users').find({"username": "admin"}).limit(5).skip(10)

Got:

2020-04-07 19:19:34.485 QUERY   [users] : {"username": "admin"}, limit: 5, skip: 10. 1 returned.