Merge pull request #6 from icai/greenkeeper/liquidjs-6.1.0

fix(package): update liquidjs to version 6.1.0

Author: icai

package.json

@@ -18,7 +18,7 @@
   "description": "gulp liquidjs static files render",
   "main": "index.js",
   "dependencies": {
-    "liquidjs": "^4.0.0",
+    "liquidjs": "^6.1.0",
     "plugin-error": "^1.0.0",
     "through2": "^2.0.3"
   },