fail early if no operation for event
add test procfile

This is the head-honcho style of tests.
add environment to tox.ini
rm var/ before tests
fixup! add test procfile
switch from using devserver to using honcho
make round-trip and post failure tests use services
travis-ci: simplified because of honcho
wrap web service in sig term->int converter
travis-ci: print log contents after run
travis-ci: only test on master
travis-ci: disable RMQ management plugin
Merge pull request #10 from mark-burnett/honcho-tests

Use honcho to spin up fork and petri services