Add support for npm 3 module layout when loading swagger resources

Closes #40

Author: knolleary

package.json

@@ -1,6 +1,6 @@
 {
     "name": "node-red-node-swagger",
-    "version": "0.1.5",
+    "version": "0.1.6",
     "description": "A set of tools for generating Swagger API documentation based on the HTTP nodes deployed in a flow",
     "license": "Apache",
     "repository": {
@@ -22,7 +22,7 @@
         "Cody Walker <[email protected]>"
     ],
     "dependencies": {
-        "swagger-ui": "2.1.3",
+        "swagger-ui": "2.1.4",
         "i18next-client": "1.10.3"
     }
 }

swagger/swagger.js

@@ -1,5 +1,5 @@
 /**
- * Copyright 2015 IBM Corp.
+ * Copyright 2015, 2016 IBM Corp.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -162,11 +162,15 @@ module.exports = function(RED) {
     }
 
     RED.httpAdmin.get('/swagger-ui/reqs/i18next.min.js', function(req, res){
-        var filename = path.join(__dirname , '../node_modules/i18next-client/i18next.min.js');
+        var basePath = require.resolve('i18next-client');
+        basePath = basePath.replace(/\/i18next.js$/,"");
+        var filename = path.join(basePath,'i18next.min.js');
         sendFile(res,filename);
     });
     RED.httpAdmin.get('/swagger-ui/reqs/*', function(req, res){
-        var filename = path.join(__dirname , '../node_modules/swagger-ui/dist', req.params[0]);
+        var basePath = require.resolve('swagger-ui');
+        basePath = basePath.replace(/\/swagger-ui.js$/,"");
+        var filename = path.join(basePath, req.params[0]);
         sendFile(res,filename);
     });
     RED.httpAdmin.get('/swagger-ui/nls/*', function(req, res){