Would you mind to add a license file

[harrtho]

Hi I hope you're doing good.

I really want to modify DailyLogAggregator.js and adjust it to my needs, but you may not be aware of this, but legally, without a license, no one can use your code.

https://opensource.stackexchange.com/a/5874

I would like to ask you to add a license file. Similar to the used Cache.js from evandcoleman LICENSE file (MIT) or any other licences you like