Merge pull request #61 from lightsofapollo/perf-refactor

Refactor performance tests.. Refactor node deps so we can cleanup repo.
Don't allow zero/negative INTERVAL, assume 1
Merge pull request #73 from kewisch/interval-zero-fix

Don't allow zero/negative INTERVAL, assume 1
Add numericDayToIcalDay method
Merge pull request #74 from mozilla-comm/numericDayToIcalDay

Add numericDayToIcalDay method
Modify README for new mozilla-comm location [skip ci]
Improve ICAL.Event time handling interface to also handle times and new
properties.