Added text option for number-display

This will allow users to set the text attached with a number-display. (TO DO) Pluralization of text, (https://github.com/blakeembrey/pluralize) can be helpful.
The reason I did this was what if the user gives an object without html or some. _html will not have _html.all or _html.some then, which in turn causes an error while using replace function later. So I have them "" by default.