fixed comma so now it works

Author: Ricecoder

package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "test": "mocha",
     "start": "browser-sync start --server --directory --files='src/index.html'",
-    "sass": "node-sass --output-style expanded --output css/ scss/main.scss",
+    "sass": "node-sass --output-style expanded --output css/ scss/main.scss"
   },
   "repository": {
     "type": "git",