Version bump to 0.1.15
Version bump to 0.1.15

fukayatsu/xray-rails,brentd/xray-rails,fukayatsu/xray-rails,mattbrictson/xray-rails,fukayatsu/xray-rails,mattbrictson/xray-rails,mattbrictson/xray-rails,mattbrictson/xray-rails,brentd/xray-rails,brentd/xray-rails,fukayatsu/xray-rails,brentd/xray-rails