update gulp-sass

package.json

@@ -32,6 +32,7 @@
     "ejs-cli": "^1.2.0",
     "express": "^4.12.4",
     "express-session": "^1.11.3",
+    "gulp-sass": "^3.0.0",
     "hat": "0.0.3",
     "ini": "^1.3.4",
     "json": "^9.0.3",
@@ -81,7 +82,7 @@
     "gulp-concat": "^2.4.3",
     "gulp-cssnano": "^2.1.0",
     "gulp-ejs": "^1.0.0",
-    "gulp-sass": "^2.0.1",
+    "gulp-sass": "^3.0.0",
     "gulp-serve": "^1.0.0",
     "gulp-sourcemaps": "^1.5.2",
     "gulp-uglify": "^1.1.0",