var MerctorGrid = function(options) {
    var self = this;
    self.cellSize = options.cellSize || 1;
    
}

@@ -1,16 +1,17 @@
 var Merc
+a
 torGrid 
@@ -96,15 +96,90 @@
 e %7C%7C 1;%0A
-    
+%7D%0A%0Aif (typeof exports == 'function') %7B%0A    exports.MercatorGrid = MercatorGrid;
 %0A%7D%0A

Update mercator-grid.js