added procfile for heroku deployment
added procfile for heroku deployment

keflavich/frontend,camelot-project/frontend,adamginsburg/frontend,camelot-project/frontend,e-koch/frontend,e-koch/frontend,camelot-project/frontend,keflavich/frontend,scog1234/frontend,adamginsburg/frontend,keflavich/frontend,scog1234/frontend,adamginsburg/frontend,e-koch/frontend,scog1234/frontend