update readme

Author: zeke

README.md

@@ -1,39 +1,43 @@
 # color-palette
 
-Extract colors from GIF, PNG, JPG, and SVG images
-
-This package is intended for use in node environments. It won't work in a browser because it has node-specific dependencies.
-
-It uses [get-pixels](https://npm.im/get-pixels) to create a pixel array from the given file, then uses [get-rgba-palette](https://npm.im/get-rgba-palette) (which uses [quantize](https://www.npmjs.com/package/quantize) under the hood) to extract a color palette. Colors are converted from `get-rgba-palette`'s [flat array format](https://github.com/mattdesl/get-rgba-palette#palettepixels-count-quality-filter) into [chroma.js](http://gka.github.io/chroma.js/) color instances.
-
-For SVG files, a PNG copy is created on the fly using [svg2png](https://npm.im/svg2png), which depends on PhantomJS. PhantomJS can be installed as a node module, which makes it preferable to something like `canvg`/ [canvas](https://npm.im/canvas), which has [external dependencies](https://github.com/Automattic/node-canvas#installation).
+Extract colors from images. Supports GIF, JPG, PNG, and even SVG!
 
 ## Installation
 
 ```sh
 npm install color-palette --save
 ```
 
+This package is intended for use in node environments. It won't work in a browser because it has node-specific dependencies.
+
 ## Usage
 
 ```js
 const colorPalette = require("color-palette")
 
 colorPalette(__dirname + 'double-rainbow.png', function(err, palette){
-  // palette is an array of chroma.js colors
+  // palette is an array of colors
 })
 ```
 
-The palette yielded by the callback is an array of [chroma.js](http://gka.github.io/chroma.js) color objects. This is convenient because it lets you pick the color format you want, and gives you access to powerful color manipulation features.
+The `palette` is an array of [chroma.js](http://gka.github.io/chroma.js) color objects. This is convenient because it lets you pick the color format you want (RGB hex, HSL, etc), and gives you access to powerful color manipulation features:
 
 ```js
 palette.map(color => color.hex())
 // => ['#FFFFFF', '#123123', '#F0F0F0']
 
 palette[0].alpha(0.5).css();
-//  => 'rgb(0,128,128)''
+// => 'rgb(0,128,128)''
 ```
 
+## How it Works
+
+`color-palette` uses [get-pixels](https://npm.im/get-pixels) to create a pixel array, then extracts a color palette with [get-rgba-palette](https://npm.im/get-rgba-palette), which uses [quantize](https://www.npmjs.com/package/quantize) under the hood.
+
+Colors are converted from [get-rgba-palette's flat array format](https://github.com/mattdesl/get-rgba-palette#palettepixels-count-quality-filter) into [chroma.js color instances](http://gka.github.io/chroma.js/).
+
+To extract palettes from SVG files, a PNG copy is created on the fly using [svg2png](https://npm.im/svg2png), which depends on PhantomJS. PhantomJS can be installed as a local node module, unlike [canvas](https://npm.im/canvas) which has [external dependencies](https://github.com/Automattic/node-canvas#installation).
+
 ## Tests
 
 ```sh

package.json

@@ -1,7 +1,7 @@
 {
   "name": "color-palette",
   "version": "1.0.0",
-  "description": "Extract colors from GIF, PNG, JPG, and SVG images",
+  "description": "Extract colors from images. Supports GIF, JPG, PNG, and even SVG!",
   "main": "index.js",
   "scripts": {
     "test": "mocha"