Drop www. from marlinfirmware.org (PR#175)

Marlin/Marlin_main.cpp

  *  - http://objects.reprap.org/wiki/Mendel_User_Manual:_RepRapGCodes
  *
  * Help us document these G-codes online:
- *  - http://www.marlinfirmware.org/index.php/G-Code
+ *  - http://marlinfirmware.org/index.php/G-Code
  *  - http://reprap.org/wiki/G-code
  *
  * -----------------

Marlin/ultralcd_implementation_hitachi_HD44780.h

     lcd.setCursor(TEXT_SCREEN_LOGO_SHIFT, 1);                    lcd_printPGM(PSTR("|Marlin|"));
     lcd.setCursor(TEXT_SCREEN_LOGO_SHIFT, 2); lcd.print('\x02'); lcd_printPGM(PSTR( "------" ));  lcd.print('\x03');
 
-    lcd_scroll(0, 3, PSTR("www.marlinfirmware.org"), LCD_WIDTH, 3000);
+    lcd_scroll(0, 3, PSTR("marlinfirmware.org"), LCD_WIDTH, 3000);
 
     #ifdef STRING_SPLASH_LINE1
       lcd_erase_line(3);