add escape for lyrics API

http://makeitpersonal.co/lyrics API returns weird results when `artist` or `title` parameter has '<' or '>' char.  This happens when a user tries to fetch lyrics for songs like ["With>You"](http://www.rdio.com/artist/Linkin_Park/album/Reanimation/track/Wth%3EYou/).

This pull request will replace '<' and '>' to single space when a user runs command like `rdio lyrics`.