Worked on System Class Disassembler & readRom

Added: Opcode Table and Disassembler Print Functions
Added: RomReader Method which grabs the first nibble and returns it.
The location is determined by the pc
Added: self.pc++ to the Dissassembler to update the current program
counter

Memory Playground should be called Dissasembler Program

loadrom method added

may added an override method for the readRom method which reads a line
of code that the user wants to debug