Merge branch 'master' of https://git.geteasy.info/GetEasy/GetEasy.Node.Printer

GetEasy.Node.Printer/package.json

@@ -10,7 +10,9 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "ffi": "^2.3.0",
+    "ffi": "github:Im-Kevin/node-ffi#node-12",    
+    "ref": "github:Im-Kevin/ref#node-12",
+    "ref-struct": "github:Im-Kevin/ref-struct#node-12",
     "os": "^0.1.1"
   },
   "devDependencies": {