Add watchos deployment target
Add watchos deployment target

yas375/SWXMLHash,yas375/SWXMLHash,jpsim/SWXMLHash,jpsim/SWXMLHash,chrisamanse/SWXMLHash,chrisamanse/SWXMLHash,jpsim/SWXMLHash,drmohundro/SWXMLHash,chrisamanse/SWXMLHash,yas375/SWXMLHash,drmohundro/SWXMLHash