new post on clustering hip-hop tracks
renamed hip hop post file
added note about k=4
added spotify playlist embed code
added remaining playlists' embed code
rewording
centered spotify playlists
added test playlist

the iTunes imported playlists don't show up in the iframe. testing with a
non-iTunes imported playlist.
added second test playlist

a non-iTunes imported playlist with no local files showed up in the iframe. Now
testing with a non-iTunes playlist with local files.
added results analysis to playlisting post
updated .gitignore

from here: https://github.com/jekyll/jekyll/blob/master/.gitignore
fixed playlist image embedding
added playlist image files