Missing LICENSE and NOTICE file

[justinmclean]

All ASF project need a LICENSE and NOTICE file. I note view license is pointing to COPYING which contains possible out of date information.

[fpj]

Adding the how-to guide reference for LICENSE and NOTICE files:

http:https://www.apache.org/dev/licensing-howto.html

[btashton]

I'm working on getting an initial stab at this including the headers for easy files, but it won't be ready until I'm back next week.