add postpublish script to push a tag
add postpublish script to push a tag

jcoreio/redux-features,jcoreio/redux-utils,jedwards1211/es2015-library-skeleton,jedwards1211/resume,jedwards1211/redux-track-promise,jcoreio/react-redux-features,jedwards1211/crater-util,jcoreio/redux-features-hot-loader,jedwards1211/resume,jcoreio/redux-features-hot-loader,jedwards1211/react-library-skeleton