Update README.md

Author: Justin Baker

README.md

@@ -90,16 +90,16 @@ About LaunchDarkly
     * [JavaScript] (http://docs.launchdarkly.com/docs/js-sdk-reference "LaunchDarkly JavaScript SDK")
     * [PHP] (http://docs.launchdarkly.com/docs/php-sdk-reference "LaunchDarkly PHP SDK")
     * [Python] (http://docs.launchdarkly.com/docs/python-sdk-reference "LaunchDarkly Python SDK")
+    * [Python Twisted] (http://docs.launchdarkly.com/docs/python-twisted-sdk-reference "LaunchDarkly Python Twisted SDK")
     * [Go] (http://docs.launchdarkly.com/docs/go-sdk-reference "LaunchDarkly Go SDK")
     * [Node.JS] (http://docs.launchdarkly.com/docs/node-sdk-reference "LaunchDarkly Node SDK")
     * [.NET] (http://docs.launchdarkly.com/docs/dotnet-sdk-reference "LaunchDarkly .Net SDK")
     * [Ruby] (http://docs.launchdarkly.com/docs/ruby-sdk-reference "LaunchDarkly Ruby SDK")
-    * [Python Twisted] (http://docs.launchdarkly.com/docs/python-twisted "LaunchDarkly Python Twisted SDK")
+    * [iOS] (http://docs.launchdarkly.com/docs/ios-sdk-reference "LaunchDarkly iOS SDK")
+    * [Android] (http://docs.launchdarkly.com/docs/android-sdk-reference "LaunchDarkly Android SDK")
 * Explore LaunchDarkly
-    * [www.launchdarkly.com] (http://www.launchdarkly.com/ "LaunchDarkly Main Website") for more information
+    * [launchdarkly.com] (http://www.launchdarkly.com/ "LaunchDarkly Main Website") for more information
     * [docs.launchdarkly.com] (http://docs.launchdarkly.com/  "LaunchDarkly Documentation") for our documentation and SDKs
     * [apidocs.launchdarkly.com] (http://apidocs.launchdarkly.com/  "LaunchDarkly API Documentation") for our API documentation
     * [blog.launchdarkly.com] (http://blog.launchdarkly.com/  "LaunchDarkly Blog Documentation") for the latest product updates
-
-
-
+    * [Feature Flagging Guide] (https://github.com/launchdarkly/featureflags/  "Feature Flagging Guide") for best practices and strategies