Merge pull request #55 from algoliareadmebot/master

Update README

Author: Clément Le Provost

README.md

@@ -6,14 +6,15 @@
 
 **<Welcome Objective-C developers>**
 
-In July 2015, we released a new version of our Swift client, able to work with Swift and Objective-C. As of version 3 (April 2016), Swift has become the reference implementation for both Swift and Objective-C projects.
+In July 2015, we released a **new version** of our Swift client, able to work with Swift and Objective-C. As of version 3 (April 2016), Swift has become the reference implementation for both Swift and Objective-C projects.
 
-If you were using our Objective-C client, [read the migration guide](https://github.com/algolia/algoliasearch-client-swift/wiki/Migration-guide-from-Objective-C-to-Swift-API-Client).
-
-The [Objective-C API Client](https://github.com/algolia/algoliasearch-client-objc) is no longer under active development. It is still supported for bug fixes, but will not receive new features.
+If you were using our Objective-C client, read the [migration guide from Objective-C](https://github.com/algolia/algoliasearch-client-swift/wiki/Migration-guide-from-Objective-C-to-Swift-API-Client). The [Objective-C API Client](https://github.com/algolia/algoliasearch-client-objc) is no longer under active development. It is still supported for bug fixes, but will not receive new features.
 
 **</Welcome Objective-C developers>**
 
+If you were using **version 2.x** of our Swift client, read the [migration guide to version 3.x](https://github.com/algolia/algoliasearch-client-swift/wiki/Migration-guide-to-version-3.x).
+
+
 
 
 <!--NO_HTML-->
@@ -856,6 +857,8 @@ You can use the following optional arguments:
 
 <p>Attributes are separated with a comma (for example <code>&quot;name,address&quot;</code>). You can also use a string array encoding (for example <code>[&quot;name&quot;,&quot;address&quot;]</code> ). By default, all attributes are retrieved. You can also use <code>*</code> to retrieve all values when an <strong>attributesToRetrieve</strong> setting is specified for your index.</p>
 
+<p><code>objectID</code> is always retrieved even when not specified.</p>
+
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