DOCS: add CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,38 @@
+# Contributing
+
+Before making any contributions, please sign one of the contributor license agreements below.
+
+Fork the repo, develop and test your code changes.
+
+* `npm test` to run tests.
+* `npm run regression-test` to run regression tests.
+* `npm run cover` to see the test coverage report.
+
+To run the regression tests, first create and configure a project following the [instructions on how to run gcloud-node]
+(README.md#elsewhere).
+After that, set the following environment variables:
+
+- **GCLOUD_TESTS_PROJECT_ID**: Developers Console project's ID (e.g. bamboo-shift-455)
+- **GCLOUD_TESTS_KEY**: The path to the JSON key file.
+
+Lastly, create the indexes used in the datastore regression tests using the [gcloud command-line tool](https://developers.google.com/cloud/sdk/gcloud/) and the indexes that you can find in `regression/data/index/yaml`:
+
+* `gcloud preview datastore create-indexes regression/data/` (from the package root) 
+
+Add your (or your organization's name) to AUTHORS and
+CONTRIBUTORS files.
+
+## Contributor License Agreements
+
+Before we can accept any pull requests
+we have to jump through a couple of legal hurdles,
+primarily a Contributor License Agreement (CLA):
+
+- **If you are an individual writing original source code**
+  and you're sure you own the intellectual property,
+  then you'll need to sign an [individual CLA](http://code.google.com/legal/individual-cla-v1.0.html).
+- **If you work for a company that wants to allow you to contribute your work**,
+  then you'll need to sign a [corporate CLA](http://code.google.com/legal/corporate-cla-v1.0.html).
+
+You can sign these electronically (just scroll to the bottom).
+After that, we'll be able to accept your pull requests.

README.md

@@ -485,23 +485,4 @@ sub.close(); // closes the connection, stops listening for messages.
 
 ## Contributing
 
-Fork the repo, make changes and open a pull request.
-
-* `npm test` to run tests.
-* `npm run cover` to see the test coverage report.
-
-Add your (or your organization's name) to AUTHORS and
-CONTRIBUTORS files.
-
-Before we can accept any pull requests
-we have to jump through a couple of legal hurdles,
-primarily a Contributor License Agreement (CLA):
-
-- **If you are an individual writing original source code**
-  and you're sure you own the intellectual property,
-  then you'll need to sign an [individual CLA](http://code.google.com/legal/individual-cla-v1.0.html).
-- **If you work for a company that wants to allow you to contribute your work**,
-  then you'll need to sign a [corporate CLA](http://code.google.com/legal/corporate-cla-v1.0.html).
-
-You can sign these electronically (just scroll to the bottom).
-After that, we'll be able to accept your pull requests.
+See [CONTRIBUTING](CONTRIBUTING.md).