updated travis osx_image
updated travis osx_image

Hearst-DD/ObjectMapper,ikesyo/ObjectMapper,CINEPASS/ObjectMapper,BlackcombSoftware/ObjectMapper,ken0nek/ObjectMapper,hsavit1/ObjectMapper,goodwall/ObjectMapper,Busta117/ObjectMapper,tonyli508/ObjectMapperDeep,goodwall/ObjectMapper,kota/ObjectMapper,zhaoguohui/ObjectMapper,yoshinorisano/ObjectMapper,Hearst-DD/ObjectMapper,kota/ObjectMapper,Busta117/ObjectMapper,kota/ObjectMapper,bscarano/ObjectMapper,bscarano/ObjectMapper,ken0nek/ObjectMapper,cfraz89/ObjectMapper,yoshinorisano/ObjectMapper,zhaoguohui/ObjectMapper,ikesyo/ObjectMapper,csjlengxiang/ObjectMapper,hsavit1/ObjectMapper,baydet/ObjectMapper,tonyli508/ObjectMapperDeep,CINEPASS/ObjectMapper,csjlengxiang/ObjectMapper,baydet/ObjectMapper,cfraz89/ObjectMapper,BlackcombSoftware/ObjectMapper