moved logger auth success to req,event classes

override to_s for req,event classes

rename authenticate to identify in base class

lib/obsws/event.rb

@@ -77,9 +77,14 @@ module OBSWS
       def initialize(**kwargs)
         kwargs[:subs] = SUBS.low_volume
         @base_client = Base.new(**kwargs)
+        LOGGER.info("#{self} succesfully identified with server")
         @base_client.add_observer(self)
       end
 
+      def to_s
+        "#{self.class.name.split("::").last(2).join("::")}"
+      end
+
       def update(op_code, data)
         if op_code == Mixin::OPCodes::EVENT
           event = data[:eventType]