code: function(ms) {
  				return this.always(function() {
  					var time;
  					// console.log("deep.delay : ", ms);
  					var p = new promise.Promise();
  					setTimeout(function() {
  						p.resolve(undefined);
  					}, ms);
  					return p;
  				});
  			}
docs: will wait xxxx ms before continuing chain
  (always familly)
  
  transparent (do not modify promise success/error)
  
  
  @chainable
  @method delay
  @param  {number} ms
  @return {deep.NodesChain} this