Update Symbol Table Interface
Update SymbolTable Interaface

	Base SymbolTable on std::list instead of std::stack
Implement SymbolTable functions
Add Makefile
Add scanner driver and its usage file

	Implement command line parse logic.

	Write doc for command line usage of scanner driver.
Update Makefile
Update scanner driver

	Implement token file dump

	Implement lexer debug dump
Add scanner driver usage
Add ERROR Token