Add license to package.json

This makes it easier for tools like https://www.npmjs.org/package/licensing to identify the licenses of dependencies and thus to ensure that your project only includes dependencies with a compatible license to its own.
setTimeout(..., 0) -> setImmediate(...)
Flair

- Modernize package.json
- Modernize README badges
Specify old testing dependency versions, to make travis not fail
Merge pull request #28 from gameclosure/tests-pass-again

Specify old testing dependency versions, to make travis not fail
Merge pull request #23 from voxpelli/patch-1

Add license to package.json
Merge branch 'flair' of github.com:tkazec/ff into tkazec-flair

Conflicts:
	package.json
t push origin masterMerge branch 'tkazec-flair'
Merge pull request #24 from tkazec/setimmediate

setTimeout -> setImmediate