Update ObjectMapper.podspec
Update ObjectMapper.podspec

Added support for watchOS 2
kota/ObjectMapper,hsavit1/ObjectMapper,CINEPASS/ObjectMapper,baydet/ObjectMapper,ikesyo/ObjectMapper,yoshinorisano/ObjectMapper,kota/ObjectMapper,cfraz89/ObjectMapper,Hearst-DD/ObjectMapper,BlackcombSoftware/ObjectMapper,cfraz89/ObjectMapper,bscarano/ObjectMapper,ken0nek/ObjectMapper,Hearst-DD/ObjectMapper,ken0nek/ObjectMapper,kota/ObjectMapper,BlackcombSoftware/ObjectMapper,goodwall/ObjectMapper,baydet/ObjectMapper,zhaoguohui/ObjectMapper,hsavit1/ObjectMapper,tonyli508/ObjectMapperDeep,bscarano/ObjectMapper,CINEPASS/ObjectMapper,Busta117/ObjectMapper,ikesyo/ObjectMapper,csjlengxiang/ObjectMapper,csjlengxiang/ObjectMapper,zhaoguohui/ObjectMapper,tonyli508/ObjectMapperDeep,Busta117/ObjectMapper,yoshinorisano/ObjectMapper,goodwall/ObjectMapper