First Release!

Welcome to the first release of spotifyCL!!! All uses are outlined in the README, or can be displayed by running spotifycl -h. In future releases, I plan to make the search function for playlists search through your saved playlists first, then search all of Spotify for the playlist. I also need to add an error message for trying to do an action while a current Spotify session isn't going on (unless it's too slow because of possibly 2 API calls), but besides that, there's not much more functionality I'd want to add. I'll work on that at some point soon, but I've gotta actually focus on school now.