initial code commit
added #comments
added .travis.yml
install libtag dependency on travis-ci
utf-8 fix for ruby 1.9
updated README
added #title and #album
more mp3 tests added
added #year and id3v2 hack
added #date and #album_art
fix for id3v2 parsing on files that don't have v2 tags
fallback to id3v1 tags
#date: return nil if year == 0; more mp3 tests
added mp3 (id3v2 only) tests
added MP4#apple_id
improvements to MP4#date
improvements to MP3#date

TDRC, TYER, TDAT and YEAR are all supported
added EasyTag::File#open
updated README with code synopsis
tweaked README layout