Grunt grunt-contrib-imagemin dependency update from 0.2.0 to 0.5.0
Grunt grunt-contrib-imagemin dependency update from 0.2.0 to 0.5.0

arey/angular-musicbrainz,arey/angular-musicbrainz,arey/angular-musicbrainz,arey/angular-musicbrainz,arey/angular-musicbrainz