Fix 5's npm run watch on Windows

stages/5/package.json

@@ -4,7 +4,7 @@
   "description": "Like GitHub, but for Elm stuff.",
   "scripts": {
     "build": "elm-make src/Main.elm --output elm.js",
-    "watch": "../../node_modules/.bin/elm-live src/Main.elm --open -- --output=elm.js",
+    "watch": "node watch.js",
     "test": "node test.js",
     "install": "npm run build"
   },

stages/5/watch.js

@@ -0,0 +1,7 @@
+var fs = require("fs");
+var execSync = require("child_process").execSync;
+var path = require("path");
+var binPath = path.join(__dirname, "..", "..", "node_modules", ".bin");
+var watchPath = path.join(binPath, "elm-live");
+
+execSync(watchPath + " src/Main.elm --open -- --output=elm.js", { stdio: "inherit" });