Prevent the init script from trying to start multiple Riemanns. fixes #181
clear up signal name.
Adds 'runs' function to examine moving-event-windows
Return the last event from the window, not the first (which is the current event).
Adds a CONTRIBUTING file

CONTRIBUTING file shows potential contributers how to get the code
checked out and running and explains expectations for code/tests/documentation.

github "display[s] a link to the CONTRIBUTING file when a user creates
an Issue or opens a Pull Request" see https://github.com/blog/1184-contributing-guidelines

* mostly modeled on riemann.io/howto.html
* adds link for lien install/usage documentation
* expands lien target documentation
* adds link to github pull request usage
* missing a link for "clojure client" repo.
Fix docstring convention issue
Fix docstring consistency issue
Also fix blatantly false information in the docstring :-)
adds a teaser intro to the README
Add tests for streams/runs. Ensure that it doesn't examine windows that are smaller than necessary.
WIP: streams/part-time-simple.

Intended for wall-clock timed reducers which should *not* use
periodically-until-expired. No tests yet; I need to write tests and have
it take over for throttle, rollup, and friends.
Revert "Add AWS SNS notifier"

Dependending on aws-0.1.0-SNAPSHOT is breaking the build
by introducing a broken dependency on jackson.

This reverts commit e3f64f0b65f3c0a9eccb42262b49d9bacdbe7f45.