`authenticationRoles` can be set to appear in the tooltip of the key icon for API calls that require authentication.
improved unit tests by using more specific asserts
Added the initial structure for a Symfony Validation handler that is injected into the parsers.
Built parse-merging into the ApiDocExtractor.

Wired up a "post-parse" pass to allow recursive parsing across multiple parsers.
Fixed multi-level validation nesting.

Removed "class" parameters from results after processed.

Updated README.
Updated postParse logic to utilize an interface and to avoid unnecessary "supports" checks.

Expanded documentation on new classes and methods.
Adds custom header Authentication method
Clarify config snippet
Merge pull request #220 from qpleple/patch-1

Clarify config snippet
adds the ability to modify the `documentation` property inside custom extractor handlers
Increased input field width for sandbox forms to improve readability with long keys
Merge pull request #222 from Bladrak/improvedFormRendering

Increased input field width for sandbox forms to improve readability wit...
Merge pull request #219 from jsampedro77/header-auth

Adds custom header Authentication method
Speed up toggling
Merge pull request #210 from jhallbachner/validation2

Added Support for Validation Component (refactored)
fix #226
Enable PHPDoc @link feature
Merge pull request #228 from vincentchalamon/master

Fix #226
Not all "strict" params should be "Requirements" in the documentation

View https://github.com/nelmio/NelmioApiDocBundle/issues/229
Merge pull request #230 from eillarra/patch-1

Not all "strict" params should be "Requirements" in the documentation, closes #229