bug: Store XHR breadcrumb only when readyState === 4
bug: Store XHR breadcrumb only when readyState === 4

getsentry/raven-js,getsentry/raven-js,getsentry/raven-js,housinghq/main-raven-js,housinghq/main-raven-js,getsentry/raven-js,housinghq/main-raven-js