Fixes a typo in the annotations.rst
Merge pull request #363 from potherca/patch-1

Fixes a typo in the annotations.rst
Making test running against phpunit 4.*, and fix phpunit version for dev
Merge pull request #369 from joelwurtz/fix/travis-unittest

Making test running against phpunit 4.*
fixed wrong result generation in visit array if some elements are skipped

If the navigator return ```null``` and it should be skipped then the ```rs``` array loses his sequential indexes so you will get an object instead an array in JSON.
add testcase