Too much crap for one commit

Breaking out console runner into its own file, adding an empty web
runner, and starting to test that games and game states are able to
represent themselves as images.

conway/conways-game-of-life/main.go

@@ -14,6 +14,7 @@ var (
 	height  = flag.Int("height", 40, "Game height")
 	width   = flag.Int("width", 80, "Game width")
 	mutate  = flag.Bool("mutate", false, "Mutate every other generation")
+	web     = flag.Bool("web", false, "Run server for web-based game")
 	sleepMs = flag.Int("sleep.ms", 200,
 		"Millisecond sleep interval per generation")
 )
@@ -21,9 +22,21 @@ var (
 func main() {
 	flag.Parse()
 
-	retCode, err := RunConsoleGame(*height, *width, *sleepMs, *mutate)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
+	var (
+		retCode int
+		err     error
+	)
+
+	if *web {
+		retCode, err = RunWebGame(*height, *width, *sleepMs, *mutate)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
+		}
+	} else {
+		retCode, err = RunConsoleGame(*height, *width, *sleepMs, *mutate)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
+		}
 	}
 
 	os.Exit(retCode)