chore(dependencies): remove happypack, tick node-sass

Author: danbucholtz

package.json

@@ -31,9 +31,8 @@
     "clean-css": "3.4.19",
     "cross-spawn": "4.0.0",
     "fs-extra": "0.30.0",
-    "happypack": "^2.2.1",
     "json-loader": "^0.5.4",
-    "node-sass": "3.9.3",
+    "node-sass": "3.10.1",
     "postcss": "5.2.0",
     "rollup": "0.36.3",
     "rollup-plugin-commonjs": "5.0.4",