Option to set requirements and parameters directly from ApiDoc annotation

Sometimes required parameters are not used through routing but still they are mandatory. I wanted to have API with

resource.json?foo=bar&something=else

format, that was possible through QueryParam annotation or requirements in routing BUT!

There was no way to set dataType or description

This PR solves problem for me.

Side note: if you want to declare e.g. _format requirement through Annotation or any other param that is used in url ({foo} format) then it won't work. Because Bundle still overrides requirements and parameters after the constuctor in ApiDoc is called. This might be solved in separate PR by adding check if given requirements or parameters was already defined.
Merge pull request #218 from konradpodgorski/feature/extendedAnnotation

Option to set requirements and parameters directly from ApiDoc annotation
make form and validation extractors optional
add missing dependencies
Merge remote-tracking branch 'Tobion/optional_form'
Update travis config
Keep order of loaders, fixes #265 build
Test suite cleanups