Added the handling of the two cases (quoted expression, and file) to the scan command in the 'scan.go' file.  Right now the scan command is really just intented to be used while I develop the scanner and most likely will be removed in the future.
Added comments next to the tokens to help any reader identify what text a token cooresponds to.  Right now, each token is only four characters long in order to minize the screen space of printing them out while using the 'scan' command
Added the 'help' and 'scan' commands to the 'disco' command.  This file will go through a lot of refactoring over the next few days as I figure out how I want to structure the project.
The work on the lexical scanner has begun, so a stub file has been added to the project to remind me where to begin.