use env var for reply-to
add site tests with mocha and chai
update README
add site, email_notifier tests
frontend fix
clean up frontend
add first pinger module test
move scheduler to own module
jshint fix
relax jshint config. add jshintignore file
move sites collecting out of pinger module. add Frontend tests. rename 'sites' module
add Procfile for heroku
promise not to use