Use shevy package from npm.

Author: strarsis

package.json

@@ -15,7 +15,7 @@
     "normalize-scss": "^5.0.3",
     "sassline": "^2.1.0",
     "scut": "^1.3.0",
-    "shevy": "github:kyleshevlin/shevy#2.1.0",
+    "shevy": "^2.1.0",
     "support-for": "^1.0.6",
     "tape": "^4.2.2",
     "time-require": "^0.1.2"