Update index.js

Using Spotify API. 
Parsing JSON. 
Deleted Cheerio. 
Using Artists photo's instead of album art. 
Play - Pause detection
Seems like from this point on the spacing had totally changed from the original file. It would be great if you can change it back to the original spacing so we can see what have changed (I also want to keep the original comments in order to direct people from the blog post to this version). - If it's problematic - I can also do the merges. Thanks!