Merge pull request #11 from CameraKit/develop

Update package.json Node engine

Author: austinkettner

package.json

@@ -114,7 +114,7 @@
     "seamless-immutable": "^7.1.2"
   },
   "engines": {
-    "node": ">=7",
+    "node": "8.x",
     "npm": ">=4"
   }
 }