Update README.md (#203)

Include details about the newly added GoogleNavigation.

Author: cwoodwar6

README.md

@@ -1,10 +1,9 @@
 ![GitHub contributors](https://img.shields.io/github/contributors/googlemaps/maps-sdk-for-ios-samples)
 ![Apache-2.0](https://img.shields.io/badge/license-Apache-blue)
 
-# Google Maps SDK for iOS and Google Places API for iOS sample code
+# Google Maps SDK for iOS, Google Places SDK for iOS, and Google Navigation SDK for iOS sample code
 
-This repository contains sample code for use with the Google Maps SDK for iOS
-and Google Places API for iOS.
+This repository contains sample code for use with the Google Maps SDK for iOS, Google Places SDK for iOS and Google Navigation SDK for iOS.
 
 ## GoogleMaps
 
@@ -52,6 +51,29 @@ You will need to add an API Key to `GooglePlacesDemos/SDKDemoAPIKey.h`. Please s
 [documentation](https://developers.google.com/places/ios-api/start#get-key)
 for details on how to get an API Key.
 
+## GoogleNavigation
+
+The `GoogleNavigation` and `GoogleNavigation-Swift` sub-directory contains the sample code that is downloaded
+when you run `pod try GoogleNavigation`. To use this project:
+
+```
+$ cd GoogleNavigation
+$ pod install
+$ open GoogleNavigationDemos.xcworkspace
+```
+
+For Swift samples:
+
+```
+$ cd GoogleNavigation-Swift
+$ pod install
+$ open GoogleNavigationSwiftDemos.xcworkspace
+```
+
+You will need to add an API Key to `GoogleNavigationDemos/SDKDemoAPIKey.h`. Please
+[contact the sales team](https://cloud.google.com/contact-maps)
+for details on how to get an API Key.
+
 ## MapsAndPlacesDemo
 ### Description
 This demo application looks to bridge some of the features found in the GooglePlaces and GoogleMaps demo applications as well as utilize some of the ways the two API's can work together.