CB-13062:Added deprecation notice to README
CB-13062:Added deprecation notice to README

apache/cordova-plugin-contacts,apache/cordova-plugin-contacts,webratio/cordova-plugin-contacts,alsorokin/cordova-plugin-contacts,webratio/cordova-plugin-contacts,webratio/cordova-plugin-contacts,apache/cordova-plugin-contacts,alsorokin/cordova-plugin-contacts,webratio/cordova-plugin-contacts,apache/cordova-plugin-contacts,alsorokin/cordova-plugin-contacts,alsorokin/cordova-plugin-contacts