Added logging APIs

CGDWebServer/GCDWebServer.h

@@ -67,6 +67,8 @@ NSString* GCDWebServerGetPrimaryIPv4Address();  // Returns IPv4 address of prima
 @interface GCDWebServer (Extensions)
 @property(nonatomic, readonly) NSURL* serverURL;  // Only non-nil if server is running
 @property(nonatomic, readonly) NSURL* bonjourServerURL;  // Only non-nil if server is running and Bonjour registration is active
+- (void)logWarning:(NSString*)format, ... NS_FORMAT_FUNCTION(1,2);
+- (void)logError:(NSString*)format, ... NS_FORMAT_FUNCTION(1,2);
 #if !TARGET_OS_IPHONE
 - (BOOL)runWithPort:(NSUInteger)port;  // Starts then automatically stops on SIGINT i.e. Ctrl-C (use on main thread only)
 #endif

CGDWebServer/GCDWebServer.m

@@ -483,6 +483,24 @@ static void _NetServiceClientCallBack(CFNetServiceRef service, CFStreamError* er
   return nil;
 }
 
+- (void)logWarning:(NSString*)format, ... {
+  va_list arguments;
+  va_start(arguments, format);
+  NSString* message = [[NSString alloc] initWithFormat:format arguments:arguments];
+  va_end(arguments);
+  LOG_WARNING(@"%@", message);
+  ARC_RELEASE(message);
+}
+
+- (void)logError:(NSString*)format, ... {
+  va_list arguments;
+  va_start(arguments, format);
+  NSString* message = [[NSString alloc] initWithFormat:format arguments:arguments];
+  va_end(arguments);
+  LOG_ERROR(@"%@", message);
+  ARC_RELEASE(message);
+}
+
 #if !TARGET_OS_IPHONE
 
 - (BOOL)runWithPort:(NSUInteger)port {