columnTitles

Option	Default	Explanation
Function	returns an array	Defines column headers (thead)

Table Options	Type	Explanation
title	String	Title of the column
width	string	Percentage width of the column relative of the grid itself
sort	Boolean	Determines whether sorting is shown for this column
sortType	String	Determines whether this column should be sorted as text or numbers

###Example:

var options ={
    ...
    columnTitles : function() {
                   return [
        {
            title: "Title",
            width: "50%",
            sortType : "text",
            sort : true
        },
        {
            title: "Author",
            width : "25%",
            sortType : "text"
        },
        {
            title: "Age",
            width : "10%",
            sortType : "number"
        },
        {
            title: "Actions",
            width : "15%"
        }
    ]},
    ...
}