Changes to make open source team happy

* Add license header to all files (including setup and init)
* Add CONTRIBUTING.md
* Rename LICENSE.txt to LICENSE

Change-Id: If30edf0e29805e5224b6e65fd1af7bd90ac381b1
8 files changed
tree: 7f7a03c6b0be78ba704a424b35ca6ab0d1604516
  1. coral-enviro-devicetree/
  2. coral-enviro-drivers/
  3. python/
  4. CONTRIBUTING.md