Rewrite README

[silvolu]

[stephenplusplus]

Instructions in README say:

Click on "Create new client ID" to create a new service account. Once the account is created, click on "Generate new JSON key" to download your private key.
When I click on 'Create new Client ID', a JSON file is immediately downloaded to my machine. By clicking 'Generate new JSON key' I just create a second one and download it too... this is confusing because now I have two JSON files.

@ryanseys

[ryanseys]

https://googlecloudplatform.github.io/module-datastore.html --> https://googlecloudplatform.github.io/gcloud-node/module-datastore.html

[stephenplusplus]

https://googlecloudplatform.github.io/module-datastore.html --> https://googlecloudplatform.github.io/gcloud-node/module-datastore.html

?

[ryanseys]

In the README here and here the links are wrong (just missing the gcloud-node/ sub directory in the URL).

[stephenplusplus]

Oh, woops! Fixed that up.

[stephenplusplus]

Is this still outstanding, @silvolu?