Adding some info about using a specific runtime in the changelog and the readme.md

This PR is complementary to #336

Author: ikoevska

CHANGELOG.md

@@ -6,7 +6,8 @@ NativeScript CLI Changelog
 
 ### New
 
-* [Implemented #305](https://github.com/NativeScript/nativescript-cli/issues/305), [#322](https://github.com/NativeScript/nativescript-cli/issues/322): You can quickly add or update your platform runtime to a specific version by running `tns platform update platform@version`<br/>For example: `tns platform update ios@0.9.2-beta`
+* [Implemented #305](https://github.com/NativeScript/nativescript-cli/issues/305), [#322](https://github.com/NativeScript/nativescript-cli/issues/322): You can quickly add or update your platform runtime to a specific version by running `tns platform update platform@version`<br/>For example: `tns platform update ios@0.9.2-beta`<br/>The NativeScript team will publish experimental support for the latest versions of iOS and Android.<br/>To list all available versions for android, run $ npm view tns-android versions<br/>To list only experimental versions for android, run $ npm view tns-android dist-tags
+To list all available versions for ios, run $ npm view tns-ios versions<br/>To list only experimental versions for ios, run $ npm view tns-ios dist-tags 
 * [Implemented #302](https://github.com/NativeScript/nativescript-cli/issues/302): You can configure proxy settings for the NativeScript CLI.
 
 ### Fixed

README.md

@@ -350,6 +350,9 @@ For more information about the structure of Android native projects, see [Androi
 
 For more information about the structure iOS native projects, see [Code Organization in Xcode Projects](http://akosma.com/2009/07/28/code-organization-in-xcode-projects/).
 
+> **TIP:** The NativeScript team provides experimental support for the latest versions of iOS and Android. You can choose which platform runtime to use in your project by running `tns platform add <platform>@<Version>`<br/>To list all available versions for android, run $ npm view tns-android versions<br/>To list only experimental versions for android, run $ npm view tns-android dist-tags
+To list all available versions for ios, run $ npm view tns-ios versions<br/>To list only experimental versions for ios, run $ npm view tns-ios dist-tags
+
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