Merge pull request #159 from jubianchi/master

Refactored & fixed xUnit report
Test method should be prefixed with 'test' \!
Test method setUp(), tearDown() and (?:before|after)TestMethod() are now public.
Use php\call everywhere.
Add more requirements to composer.json
Remove a not mandatory deps (mbstring)
Use preg_replace_callback instead of \e to avoid an E_DEPRECATED on php-5.5alpha
Improve method matching in configurator