Allow setting table class

Allow styling of the table with other table classes. E.g. BS3 table-striped

Author: ndastur

reactive-datatable-template.js

@@ -10,7 +10,8 @@ Template.ReactiveDatatable.rendered = function() {
     // Help Blaze cleanly remove entire datatable when changing template / route by
     // wrapping table in existing element (#datatable_wrap) defined in the template.
     var table = document.createElement('table');
-    table.className = 'table dataTable';
+    var tableClasses = data.options.tableClasses || "";
+    table.className = 'table dataTable ' + tableClasses;
 
     // Render the table element and turn it into a DataTable
     this.$('.datatable_wrapper').append(table);
@@ -25,4 +26,4 @@ Template.ReactiveDatatable.rendered = function() {
     this.autorun(function() {
         reactiveDataTable.update(data.tableData());
     });
-};
+};