Improve Google Cloud DNS docs (#230)

- Markdown formatting improvements
- Added note about newlines in private key

docs/_providers/gcloud.md

@@ -9,7 +9,8 @@ jsId: GCLOUD
 
 ## Configuration
 
-For Google cloud authentication, DNSControl requires a JSON 'Service Account Key' for your project. Copy the full JSON object into your `creds.json` like so:
+For Google cloud authentication, DNSControl requires a JSON 'Service Account Key' for your project. Newlines in the private key need to be replaced with `\n`.Copy the full JSON object into your `creds.json` like so:
+
 {% highlight json %}
 {
     "gcloud": {
@@ -32,11 +33,9 @@ For Google cloud authentication, DNSControl requires a JSON 'Service Account Key
 See [the Activation section](#activation) for some tips on obtaining these credentials.
 
 ## Metadata
-
 This provider does not recognize any special metadata fields unique to google cloud dns.
 
 ## Usage
-
 Use this provider like any other DNS Provider:
 
 {% highlight js %}
@@ -49,7 +48,6 @@ D("example.tld", REG_NAMECOM, DnsProvider(GCLOUD),
 {%endhighlight%}
 
 ## Activation
-
 1. Go to your app-engine console and select the appropriate project.
 2. Go to "API Manager > Credentials", and create a new "Service Account Key"
 
@@ -59,7 +57,6 @@ D("example.tld", REG_NAMECOM, DnsProvider(GCLOUD),
 4. Download the JSON key and copy it into your `creds.json` under the name of your gcloud provider.
 
 ## New domains
-
 If a domain does not exist in your Google Cloud DNS account, DNSControl
-will *not* automatically add it. You'll need to do that via the
+will *not* automatically add it with the `create-domains` account. You'll need to do that via the
 control panel manually.