Update minimum node version required (#552)

Lars-Magnus Skog · web-flow · commit d08c48f91c85 · 2018-12-15T21:58:45.000+01:00
diff --git a/package.json b/package.json
@@ -57,6 +57,6 @@
   "license": "MIT",
   "gypfile": true,
   "engines": {
-    "node": ">=6"
+    "node": ">=8.6.0"
   }
 }
