Node test is broken

[chrislewis]

The node test kinesis-aggregation/node/node_modules/aws-kinesis-agg/test/testRawAggregation.js is broken. Additionally, the module is missing the dev dependencies necessary to run the tests.

#46 fixes these.

[geronimo-iia]

you could see #42

[stevegoossens]

I think this can be closed, as npm test passes all tests