Added SERIALCOMMAND_ECHO macro to enable serial echo

Author: b-

SerialCommand.cpp

@@ -1,23 +1,23 @@
 /**
  * SerialCommand - A Wiring/Arduino library to tokenize and parse commands
  * received over a serial port.
- * 
+ *
  * Copyright (C) 2012 Stefan Rado
  * Copyright (C) 2011 Steven Cogswell <steven.cogswell@gmail.com>
  *                    http://husks.wordpress.com
- * 
+ *
  * Version 20120522
- * 
+ *
  * This library is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this library.  If not, see <http://www.gnu.org/licenses/>.
  */
@@ -73,7 +73,7 @@ void SerialCommand::setDefaultHandler(void (*function)(const char *)) {
 void SerialCommand::readSerial() {
   while (Serial.available() > 0) {
     char inChar = Serial.read();   // Read single available character, there may be more waiting
-    #ifdef SERIALCOMMAND_DEBUG
+    #if defined SERIALCOMMAND_DEBUG || defined SERIALCOMMAND_ECHO
       Serial.print(inChar);   // Echo back to serial stream
     #endif