Add oojs ga-wdi-exercises#2

Author: ThwCorbin

oojs.js

@@ -19,6 +19,8 @@ class Playlist {
 // #2: Create an instance of the Playlist class and set it to a variable called `myPlaylist`
 // Call the instance's `addSong` method to add a song to the instance's `songs` array
 // Type your solution immediately below this line:
+var myPlaylist = new Playlist("Zep");
+myPlaylist.addSong("When the Levee Breaks");
 
 // NOTE: THE CODE BELOW IS FOR TESTING PURPOSES. DO NOT REMOVE OR ALTER.
 if (typeof Playlist !== "undefined") {