allow to give -name options to find command

usage example:

```  ruby

# Guardfile

guard 'ctags-composer', :src_path => ["app", "src"], :vendor_path => ["vendor"], :name_patterns => ["\\*.php", "\\*.yml", "\\*.twig"] do
  watch(/^(src|tests)\/.*\.php$/)
  watch('composer.lock')
end



```