Part II of playlister

gistfile1.txt

The goal of the second part of this lab is to create a command line interface got for the playlister application.  (The third part of the excercise will be evolving the CLI to be a web interface)

Write a ruby script that parses the data within the data directory
and uses the classes defined above to instantiate Song, Artist, and Genres
for each file. These instances should be correctly associated to each other
so that artist.genre will return a Genre object, etc.  

The data directory is filled with a bunch of songs in this format
Artist Name - Song Name [genre_name].mp3
So for example A$AP Rocky - Peso [dance].mp3
This file would give us a new artist instance, a new song instance, and a new genre
and you'd want to define the relationships between the objects (ie add the song to the artist's array of songs)

Your CLI should prompt the user with "Browse by artist or genre"
  If they type "artist" and hit enter it should take them to the next section which should
print out a list of artists, or genres.
  The artist index must list all the artists. This list must be sorted alphabetically.
  In addition to the Artists name, the artists total song count should be displayed.
  This list should also say how many Artists there are in total.
Your CLI should prompt the user with "Select Artist"
  When they type in the name of an artist your program should print out a list of 
  songs and genres.
  For example

  Dave Matthews Band - 2 Songs
    1. Tripping Billies - Uncool Jam Bands
    2. What Would You Say - Bands Blake Liked in 1996

The Genre interface for the CLI should prompt the user with "Select Genre"
  The genre index must list all the genres. This list must be sorted by the amount of songs.
  In addition to the Genres name, the total song and artist count should be listed along side it.

  # Folk: 8 Songs, 3 Artists

Once the user types a genre and hits enter they should be taken to the individual genre page

The genres page should list the name of the songs, linking to the individual
# song and artists. Also include the total unique artists and song counts in the genre.

# Folk
  # M83 - Midnight City
  # Lady Gaga - Pokerface

So a user should be able to type M83 and be taken to M83's artist "page" or Midnight City and get taken to the songs "page"
  The song page should list all the available information on the song, it's artist and genre 

If a user types the artist or genre, they should be taken to the genre or artists "page"/interface
# Extra Credit:
# Use a ruby module somewhere to refactor common functionality.