Adding support for bower and reorganizing so when its used via bower it will be manageable for a dev.

bower_components/datatables-plugins/sorting/signed-num.js

@@ -0,0 +1,30 @@
+/**
+ * Although DataTables' internal numeric sorting works no problem on negative
+ * numbers, it does not accept positively signed numbers. This plug-in will
+ * sort just such data numerically.
+ *
+ *  @name Fully signed numbers sorting 
+ *  @summary Sort data numerically with a leading `+` symbol (as well as `-`).
+ *  @author [Allan Jardine](http://sprymedia.co.uk)
+ *
+ *  @example
+ *    $('#example').dataTable( {
+ *       columnDefs: [
+ *         { type: 'signed-num', targets: 0 }
+ *       ]
+ *    } );
+ */
+
+jQuery.extend( jQuery.fn.dataTableExt.oSort, {
+	"signed-num-pre": function ( a ) {
+		return (a=="-" || a==="") ? 0 : a.replace('+','')*1;
+	},
+
+	"signed-num-asc": function ( a, b ) {
+		return ((a < b) ? -1 : ((a > b) ? 1 : 0));
+	},
+
+	"signed-num-desc": function ( a, b ) {
+		return ((a < b) ? 1 : ((a > b) ? -1 : 0));
+	}
+} );