Clean up contributing

CONTRIBUTING.md

@@ -1,39 +1,46 @@
 # Contributing
 
-Before making any contributions, please sign one of the contributor license agreements below.
+1. **Please sign one of the contributor license agreements below.**
+2. Fork the repo, develop and test your code changes.
+3. Add your (or your organization's) name to the AUTHORS and CONTRIBUTORS files.
+4. Send a pull request.
 
-Fork the repo, develop and test your code changes.
+## Testing
 
-* `npm test` to run tests.
-* `npm run regression-test` to run regression tests.
-* `npm run cover` to see the test coverage report.
+``` sh
+# Run the tests.
+$ npm test
 
-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:
+# Run the regression tests.
+$ npm run regression-test
+
+# See the test coverage report.
+$ npm run cover
+```
+
+To run the regression tests, first create and configure a project following the [instructions on how to run gcloud-node][elsewhere]. After that, set the following environment variables:
 
 - **GCLOUD_TESTS_PROJECT_ID**: Developers Console project's ID (e.g. bamboo-shift-455)
 - **GCLOUD_TESTS_BUCKET_NAME**: The name of the bucket to use for the Cloud Storage API tests
 - **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`:
+Lastly, create the indexes used in the datastore regression tests using the [gcloud command-line tool][gcloudcli] and the indexes found 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.
+``` sh
+# From the project's root directory:
+$ gcloud preview datastore create-indexes regression/data/
+```
 
 ## 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):
+Before we can accept your pull requests you'll need to sign a Contributor License Agreement (CLA):
+
+- **If you are an individual writing original source code** and **you own the intellectual property**, then you'll need to sign an [individual CLA][indvcla].
+- **If you work for a company that wants to allow you to contribute your work**, then you'll need to sign a [corporate CLA][corpcla].
 
-- **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.
 
-You can sign these electronically (just scroll to the bottom).
-After that, we'll be able to accept your pull requests.
+[elsewhere]: README.md#elsewhere
+[gcloudcli]: https://developers.google.com/cloud/sdk/gcloud/
+[indvcla]: https://developers.google.com/open-source/cla/individual
+[corpcla]: https://developers.google.com/open-source/cla/corporate