Merge pull request #8 from launchdarkly/jko/docs

Update with links to expanded documentation

Author: jkodumal

README.md

@@ -23,9 +23,14 @@ Your first feature flag
 
 2. In your application code, use the feature's key to check whether the flag is on for each user:
 
-		$user = new LaunchDarkly\LDUser("[email protected]");
+        $user = new LaunchDarkly\LDUser("[email protected]");
         if ($client->toggle("your.flag.key", $user)) {
             # application code to show the feature
         } else {
             # the code to run if the feature is off
-        }
+        }
+
+Learn more
+-----------
+
+Check out our [documentation](http://docs.launchdarkly.com) for in-depth instructions on configuring and using LaunchDarkly. You can also head straight to the [complete reference guide for this SDK](http://docs.launchdarkly.com/v1.0/docs/php-sdk-reference).