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Update README.md

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Original file line number	Diff line number	Diff line change
`@@ -234,6 +234,8 @@ let drinkTotal = cart.filter(x=> x.name === "Drink")`
`234`	`234`	console.log(`Total Drink Cost $${drinkTotal}`); // Total Drink Cost 14ドル.13
`235`	`235`	```
`236`	`236`
	`237`	`+<a href="https://codepen.io/Bunlong/pen/yqXbXQ" target="_blank">Edit on Codepen</a>`
	`238`	`+`
`237`	`239`	`## Pipelines`
`238`	`240`
`239`	`241`	`A pipeline allows for easy function composition when performing multiple operations on a variable. Since JavaScript lacks a Pipeline operator, a design pattern can be used to accomplish the task.`
`@@ -245,11 +247,17 @@ const pipe = functions => data => {`
`245`	`247`	`data`
`246`	`248`	`);`
`247`	`249`	`};`
	`250`	`+`
`248`	`251`	`let cart = [3.12, 45.15, 11.01];`
`249`	`252`	`const addSalesTax = (total, taxRate) => (total * taxRate) + total;`
	`253`	`+`
`250`	`254`	`const tally = orders => pipe([`
`251`	`255`	`x => x.reduce((total, val) => total + val), // sum the order`
`252`	`256`	`x => addSalesTax(x, 0.09),`
`253`	`257`	x => `Order Total = ${x.toFixed(2)}` // convert to text
`254`		`-])(orders); // Order Total = 64.62`
	`258`	`+])(orders);`
	`259`	`+`
	`260`	`+console.log(tally(cart)); // Order Total = 64.62`
`255`	`261`	```
	`262`	`+`
	`263`	`+<a href="https://codepen.io/Bunlong/pen/qyjmPO" target="_blank">Edit on Codepen</a>`

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