docs: function writeFileData(file_path, time, size, sizes_data, sizes_file_path){
  		var file_ext = path.extname(file_path).replace('.','');
  		var file_name = path.basename(file_path);
  
  		// create file type object if it doesnt exist
  		if(sizes_data[file_ext] === undefined){
  			sizes_data[file_ext] = {};
  		}
  		
  		// create file array
  		if(sizes_data[file_ext][file_name] === undefined){
  			sizes_data[file_ext][file_name] = [];
  		}
  		var time_obj = {
  			date: time,
  			size: size
  		};
  		grunt.log.writeln(file_path + " .... " + size + "b");
  		
  		sizes_data[file_ext][file_name].push(time_obj);
  		fs.writeFileSync(sizes_file_path, JSON.stringify(sizes_data), 'utf8');
  	}