Add parameter to add HTTP headers at async_request
Merge pull request #4 from vibaiher/1.1.1

Add parameter to add HTTP headers at async_request
Added shortcut to access to parameters
Merge branch 'master' of https://github.com/carlescliment/handy-tests-bundle

Conflicts:
	src/BladeTester/HandyTestsBundle/Model/HandyTestCase.php
Added shortcut to access to parameters
Add parameter to set connection