Merge pull request #32 from jonaustin/mbid-lookup-fix

Use last.fm's artist name in artist search result
added more ruby versions to travis
Version bump to 0.8.0
Regenerate gemspec for version 0.8.0
updated jewler
Regenerate gemspec for version 0.8.0
fixed dependency warnings in jewler
Regenerate gemspec for version 0.8.0
removed outdated ruby versions from travis
added gem version badge