Added new PID autotune info, to make easy copy & paste results to marlin

Marlin/configurator/config/language.h

 #define MSG_OK_B                            "ok B:"
 #define MSG_OK_T                            "ok T:"
 #define MSG_AT                              " @:"
-#define MSG_PID_AUTOTUNE_FINISHED           MSG_PID_AUTOTUNE " finished! Put the last Kp, Ki and Kd constants from above into Configuration.h"
+#define MSG_PID_AUTOTUNE_FINISHED           MSG_PID_AUTOTUNE " finished! Put the last Kp, Ki and Kd constants from below into Configuration.h"
 #define MSG_PID_DEBUG                       " PID_DEBUG "
 #define MSG_PID_DEBUG_INPUT                 ": Input "
 #define MSG_PID_DEBUG_OUTPUT                " Output "

Marlin/language.h

 #define MSG_OK_B                            "ok B:"
 #define MSG_OK_T                            "ok T:"
 #define MSG_AT                              " @:"
-#define MSG_PID_AUTOTUNE_FINISHED           MSG_PID_AUTOTUNE " finished! Put the last Kp, Ki and Kd constants from above into Configuration.h"
+#define MSG_PID_AUTOTUNE_FINISHED           MSG_PID_AUTOTUNE " finished! Put the last Kp, Ki and Kd constants from below into Configuration.h"
 #define MSG_PID_DEBUG                       " PID_DEBUG "
 #define MSG_PID_DEBUG_INPUT                 ": Input "
 #define MSG_PID_DEBUG_OUTPUT                " Output "

Marlin/temperature.cpp

     }
     if (cycles > ncycles) {
       SERIAL_PROTOCOLLNPGM(MSG_PID_AUTOTUNE_FINISHED);
+      SERIAL_PROTOCOLPGM("#define  DEFAULT_Kp "); SERIAL_PROTOCOLLN(Kp);
+      SERIAL_PROTOCOLPGM("#define  DEFAULT_Ki "); SERIAL_PROTOCOLLN(Ki);
+      SERIAL_PROTOCOLPGM("#define  DEFAULT_Kd "); SERIAL_PROTOCOLLN(Kd);
       return;
     }
     lcd_update();