- Major overhaul of the Simulator control class (where 'main' lives).

- Removed the CommandParser class entirely, as the weird dependency between
  Simulator and CommandParser never made me comfortable.
- Added a Command inner class to Simulator that handles some of the
  command line tokenizing.

src/main/java/com/loomcom/symon/exceptions/CommandFormatException.java

@@ -0,0 +1,10 @@
+package com.loomcom.symon.exceptions;
+
+public class CommandFormatException extends Exception {
+  public CommandFormatException(String msg) {
+    super(msg);
+  }
+  public CommandFormatException() {
+    super();
+  }
+}