update documentation
update documentation

igrybkov/PhpMetrics,NicolasMugnier/PhpMetrics,UFOMelkor/PhpMetrics,phpmetrics/PhpMetrics,UFOMelkor/PhpMetrics,phpmetrics/PhpMetrics,fonsecas72/PhpMetrics,Halleck45/PhpMetrics,shaunl/PhpMetrics,fonsecas72/PhpMetrics,umair-gujjar/PhpMetrics,UFOMelkor/PhpMetrics,umair-gujjar/PhpMetrics,phpmetrics/PhpMetrics,NicolasMugnier/PhpMetrics,hacfi/PhpMetrics,igrybkov/PhpMetrics,meadsteve/PhpMetrics,Halleck45/PhpMetrics,shaunl/PhpMetrics