add ignoreRpm option, because gcodetools default is 400

Firmware/EggbotWireless/src/ConfigManager.cpp

@@ -8,7 +8,8 @@ const std::unordered_map<std::string, std::string> defaults{
      {"wifiMode", "ap"},
      {"wifiSSID", defSSID},
      {"wifiPass", defPass},
-     {"defRpm", "2"}}};
+     {"defRpm", "2"},
+     {"ignoreRpm", "yes"}}};
 
 /*
     Max string length is 25

Firmware/EggbotWireless/src/GCodeParser.cpp

@@ -68,7 +68,7 @@ Command parseGCode(std::string gcode) {
         if (zIter != endIter) {
             bufcmd.arg3 = zIter->second;
         }
-        if (fIter != endIter) {
+        if (fIter != endIter && configManager.get("ignoreRpm") != "yes") {
             bufcmd.arg4 = fIter->second;
         } else {
             bufcmd.arg4 = atof(configManager.get("defRpm").c_str());