Add .gitignore

comp.ml

@@ -0,0 +1,11 @@
+(* Main function and target of compilation in Makefile *)
+
+let main () =
+  let help_message = "Run with:\n comp <input_filename> <output_filename>\n" in  
+  if (Array.length (Sys.argv)) != 3
+  then print_string help_message
+  else Interf.run_test Sys.argv.(1) Sys.argv.(2)
+;;
+
+main();;
+