Deleting LCD_A.asm - using LCD_Display

Removed the extra file.
Adding Read_sw5.asm

Addidng read_switches file to read from the switches for user input of
values
Writing intro message to LCD

display_welcome_message:
displays "reflow oven controller" to the LCD
LCD_Display: writing to all 16 bits

so that we dont have to clear the display which takes a while