fix jshint ignore rules, add run script

.gitignore

@@ -1 +1,2 @@
 node_modules/
+npm-debug.log

.jshintignore

@@ -2,4 +2,4 @@ appengine/kraken/public/components/**
 appengine/sails/config/**
 appengine/sails/tasks/**
 appengine/sails/assets/**
-node_modules
+**/node_modules/**

CONTRIBUTING.md

@@ -23,13 +23,10 @@ accept your pull requests.
 
 1. Submit an issue describing your proposed change to the repo in question.
 1. The repo owner will respond to your issue promptly.
-1. If your proposed change is accepted, and you haven't already done so, sign a
-   Contributor License Agreement (see details above).
+1. If your proposed change is accepted, and you haven't already done so, sign a Contributor License Agreement (see details above).
 1. Fork the desired repo, develop and test your code changes.
-1. Ensure that your code adheres to the existing style in the sample to which
-   you are contributing. Refer to the
-   [Google Cloud Platform Samples Style Guide]
-   (https://github.com/GoogleCloudPlatform/Template/wiki/style.html) for the
-   recommended coding standards for this organization.
+1. Ensure that your code adheres to the existing style in the sample to which you are contributing. Refer to the
+   [Google Cloud Platform Samples Style Guide](https://github.com/GoogleCloudPlatform/Template/wiki/style.html) for the
+   recommended coding standards for this organization.  You can run `npm run jshint` to match our JavaScript coding standards. 
 1. Ensure that your code has an appropriate set of unit tests which all pass.
-1. Submit a pull request.
+1. Submit a pull request!

package.json

@@ -4,7 +4,8 @@
   "description": "Samples used in the nodejs documentation on cloud.google.com",
   "main": "index.js",
   "scripts": {
-    "test": "mocha --recursive"
+    "test": "mocha --recursive",
+    "jshint": "jshint --exclude-path=.jshintignore ."
   },
   "author": "jerjou@google.com",
   "license": "Apache 2",