fixup StaticRouter propTypes
fixup StaticRouter propTypes

- blockTransitions isn’t required, can imagine some MemoryHistory
  usages not requiring it (or we could default to ()=>{})

- accept string or location descriptor for location prop

DelvarWorld/react-router,ReactTraining/react-router,OpenGov/react-router,ReactTraining/react-router,reactjs/react-router,asaf/react-router,OpenGov/react-router,goblortikus/react-router,DelvarWorld/react-router,reactjs/react-router,d-oliveros/react-router,OpenGov/react-router,ReactTraining/react-router,goblortikus/react-router,rafrex/react-router,ReactTraining/react-router,goblortikus/react-router,asaf/react-router,OpenGov/react-router,rackt/react-router,rafrex/react-router,asaf/react-router,rackt/react-router,d-oliveros/react-router,goblortikus/react-router