swift音乐播放器实现

实现了音乐播放，音乐列表展现，动态播放歌词等功能。使用swift2.2实现的

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2016-06-29 12:53  QQmusic\
     文件        6148  2016-07-04 09:41  QQmusic\.DS_Store
     目录           0  2016-07-26 18:15  __MACOSX\
     目录           0  2016-07-26 18:15  __MACOSX\QQmusic\
     文件         120  2016-07-04 09:41  __MACOSX\QQmusic\._.DS_Store
     目录           0  2016-07-16 00:34  QQmusic\.git\
     文件          31  2016-06-29 14:10  QQmusic\.git\COMMIT_EDITMSG
     文件         318  2016-06-29 12:57  QQmusic\.git\config
     文件          73  2016-06-29 12:53  QQmusic\.git\description
     文件          99  2016-07-15 22:28  QQmusic\.git\FETCH_HEAD
     文件          23  2016-06-29 12:53  QQmusic\.git\HEAD
     目录           0  2016-06-29 12:53  QQmusic\.git\hooks\
     文件         478  2016-06-29 12:53  QQmusic\.git\hooks\applypatch-msg.sample
     文件         896  2016-06-29 12:53  QQmusic\.git\hooks\commit-msg.sample
     文件         189  2016-06-29 12:53  QQmusic\.git\hooks\post-update.sample
     文件         424  2016-06-29 12:53  QQmusic\.git\hooks\pre-applypatch.sample
     文件        1642  2016-06-29 12:53  QQmusic\.git\hooks\pre-commit.sample
     文件        1348  2016-06-29 12:53  QQmusic\.git\hooks\pre-push.sample
     文件        4951  2016-06-29 12:53  QQmusic\.git\hooks\pre-rebase.sample
     文件        1239  2016-06-29 12:53  QQmusic\.git\hooks\prepare-commit-msg.sample
     文件        3610  2016-06-29 12:53  QQmusic\.git\hooks\update.sample
     文件        6032  2016-07-16 00:19  QQmusic\.git\index
     目录           0  2016-06-29 12:53  QQmusic\.git\info\
     文件         240  2016-06-29 12:53  QQmusic\.git\info\exclude
     目录           0  2016-06-29 12:56  QQmusic\.git\lfs\
     目录           0  2016-06-29 12:56  QQmusic\.git\lfs\objects\
     目录           0  2016-06-29 12:56  QQmusic\.git\lfs\objects\logs\
     目录           0  2016-06-29 12:56  QQmusic\.git\lfs\tmp\
     目录           0  2016-06-29 12:56  QQmusic\.git\lfs\tmp\objects\
     目录           0  2016-06-29 12:56  QQmusic\.git\logs\
     文件         321  2016-06-29 14:10  QQmusic\.git\logs\HEAD
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