Clean up of the altered XPLAINBridge project.

Projects/XPLAINBridge/USARTDescriptors.c

@@ -226,6 +226,9 @@ USB_Descriptor_String_t PROGMEM USART_ProductString =
 	.UnicodeString          = L"LUFA XPLAIN Bridge"
 };
 
+/** Descriptior retrieval function for the USART Bridge descriptors. This function is in turn called by the GetDescriptor
+ *  callback function in the main source file, to retrieve the device's descriptors when in USART bridge mode.
+ */
 uint16_t USART_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
 {
 	const uint8_t  DescriptorType   = (wValue >> 8);