Add help text to the project makefiles to help new users get information on...

Add help text to the project makefiles to help new users get information on the improved build system.

Projects/Webserver/makefile

@@ -9,6 +9,8 @@
 #         LUFA Project Makefile.
 # --------------------------------------
 
+# Run "make help" for target help.
+
 MCU          = at90usb1287
 ARCH         = AVR8
 BOARD        = USBKEY

Projects/XPLAINBridge/makefile

@@ -9,6 +9,8 @@
 #         LUFA Project Makefile.
 # --------------------------------------
 
+# Run "make help" for target help.
+
 AVRISP_PATH  = ../AVRISP-MKII
 
 MCU          = at90usb1287