Highlight fuzzy matched text with html.
This module is intended to be used with a module like fuzzysearch.
var highlight = require('fuzzysearch-highlight')
highlight('tqb', 'The quick brown fox')
//=> '<strong>T</strong>he <strong>q</strong>uick <strong>b</strong>rown fox'
highlight('quick', 'The quick brown fox', { tag: 'em' }),
//=> 'The <em>quick</em> brown fox'ISC
