Added documentation command and settings to Node package
diff --git a/src/node/package.json b/src/node/package.json
index 1caf158..756d41b 100644
--- a/src/node/package.json
+++ b/src/node/package.json
@@ -21,7 +21,8 @@
   },
   "scripts": {
     "lint": "node ./node_modules/jshint/bin/jshint src test examples interop index.js",
-    "test": "node ./node_modules/mocha/bin/mocha && npm run-script lint"
+    "test": "node ./node_modules/mocha/bin/mocha && npm run-script lint",
+    "gen_docs": "./node_modules/.bin/jsdoc -c jsdoc_conf.json"
   },
   "dependencies": {
     "bindings": "^1.2.0",
@@ -32,6 +33,7 @@
   "devDependencies": {
     "async": "^0.9.0",
     "google-auth-library": "^0.9.2",
+    "jsdoc": "^3.3.2",
     "jshint": "^2.5.0",
     "minimist": "^1.1.0",
     "mocha": "~1.21.0",