Add thousand seperator for jquery.numeric.js

[Zolfaghari]

Add thousand separator for Integer part of inputted number.
decimal part won't format with ',' separator.

• @name numeric
• @param config { decimal : "." , negative : true , separator : "," }
• @param callback A function that runs if the number is not valid (fires onblur)
• @example $(".numeric").numeric();
• @example $(".numeric").numeric({ separator : "," }); // use , as separator
• @example $(".numeric").numeric({ decimal : "." , separator : "," }); // use , as separator
• @example $(".numeric").numeric({ negative : false , separator : "," }); // do not allow negative values