Updated composer.json for 2.1.0 release
Updated composer.json for 2.1.0 release

- branch aliases:
  - dev-master => 2.1-dev
  - dev-develop => 2.2-dev
- remove authors; check source commits for contributors
- removed email link; direct users to issues

kusmierz/zf-apigility-doctrine,kusmierz/zf-apigility-doctrine