code: function ( obj ) {
  		var result = [];
  
  		result = obj.reduce( function ( a, b ) {
  			return a.concat( b );
  		}, result );
  
  		return result;
  	}
docs: Flattens a 2D Array
  
  @method flat
  @param  {Array} obj 2D Array to flatten
  @return {Array}     Flatten Array