Clean open statements.

src/cartridge.ml

@@ -1,6 +1,3 @@
-open Unix
-open Printf
-
 (** http://bgb.bircd.org/pandocs.htm#thecartridgeheader *)
 
 

src/oboy.ml

@@ -8,6 +8,7 @@ let power_up cartridge =
   then print_endline "Invalid ROM."
   else
     print_endline "Valid ROM.";
+    printf "Title: %s\n" cartridge.title;
     printf "ROM size: %iKB\n" cartridge.rom_size;
     printf "RAM size: %iKB\n" cartridge.ram_size