use metalsmith 1.0.1 in tests

Author: stevenschobert

package.json

@@ -21,7 +21,7 @@
   },
   "homepage": "https://github.com/stevenschobert/metalsmith-sass",
   "devDependencies": {
-    "metalsmith": "^0.8.0",
+    "metalsmith": "^1.0.1",
     "mocha": "^1.20.1",
     "rimraf": "^2.2.6",
     "assert-dir-equal": "^1.0.1",