Convert html to plain text with beauty format in browser, inspired by https://github.com/werk85/node-html-to-text
##example
http://fudesign2008.github.io/plainize/test.html
##api
/**
* @param {Node|String} html
* @param {Object} [options]
* @param {Integer} [options.maxLength = 0]
* @param {Object} [options.skipElements = {script: true, noscript: true, style: true}]
* @return {String}
*
*/
window.plainize.plainize(html, options);
/**
* NOTE:
*
* 1. This function can parse html and avoid to load images
* 2. If you want to parse html and load images, you can create a `div` to
* parse html
*
* @param {String} markup
* @param {Document} [context = document]
* @param {Boolean} [returnWrapper = true]
* @return {HTMLElement|Array<Node>}
*/
window.plainize.parseHTML(markup, context, returnWrapper);