Added the Zend\Form decepence in composer.json for Zend\Mvc
[#3716] alphabetize requires

- Makes them easier to find in the list
Created README.md files for each component

- Since we have per-component mirrors of each component, we should have a
  README.md detailing where to create issues and pull requests, and where
  documentation lives; additionally, detailing the license is a generally good
  idea.