Added docs for Cloudflare DNS provider (#65)

docs/_providers/cloudflare.md

@@ -0,0 +1,48 @@
+---
+name: Cloudflare
+layout: default
+jsId: CLOUDFLAREAPI
+---
+# Cloudflare Provider
+
+## Configuration
+
+In your providers config json file you must provide your cloudflare.com api
+username and access token:
+
+{% highlight json %}
+{
+  "cloudflare.com":{
+    "apikey": "your-cloudflare-api-key",
+    "apiuser": "your-cloudflare-username"
+  }
+}
+{% endhighlight %}
+
+## Metadata
+
+Record level metadata availible:
+   * cloudflare_proxy ("true" or "false")
+
+Domain level metadata availible:
+   * cloudflare_proxy_default ("true" or "false")
+
+Provider level metadata availible:
+   * ip_conversions
+
+## Usage
+
+Example javascript:
+
+{% highlight js %}
+var REG_NAMECOM = NewRegistrar("name.com","NAMEDOTCOM");
+var CFLARE = NewDnsProvider("cloudflare.com","CLOUDFLAREAPI");
+
+D("example.tld", REG_NAMECOM, DnsProvider(CFLARE),
+    A("test","1.2.3.4")
+);
+{%endhighlight%}
+
+## Activation
+
+DNSControl depends on a Cloudflare Global API Key that's available under "My Settings".