Implemented command objects, which tie together a user input, the parsed action, any objects to interact with, and the results of the action.

Defined three basic actions, and allowed the parser to create command objects for those actions.

LOOK [OBJECT] will examine the environment or any objects specified by the user.
CLEAR will clear the console.
[GO] DIRECTION will move the user.  Currently just prints a string to the console however.

Pressing the submit button will now send the input to the parser, and if command can be parsed from the input it will be performed.