Added doc for info command

README.md

@@ -66,6 +66,10 @@ Once inside a debugging session, the following commands may be used:
 
 * `print $var` - Evaluate a variable.
 
+* `info $type [regex]` - Outputs information about the symbol table. An optional regex filters the list. Example `info functions unicode`. Valid types are:
+  * `sources` - Prings the path of all source files
+  * `functions` - Prings the name of all defined functions
+
 * `exit` - Exit the debugger.