Update broken links.

docs/samples.md

@@ -1,6 +1,6 @@
 # Samples
 
-This page provides three detailed examples which demonstrate the library's functionality. Browse the [project source](https://code.google.com/p/google-api-javascript-client/source/browse/#hg%2Fsamples) for additional samples.
+This page provides three detailed examples which demonstrate the library's functionality. Browse the [project source](https://github.com/google/google-api-javascript-client/tree/master/samples) for additional samples.
 
 Loading an API and Making a Request
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@@ -46,11 +46,11 @@ This snippet shows how to load an API and make a request. In this case, the requ
 
 The following sample demonstrates how to get "authorized" access to a Google API using OAuth 2.0. See the full sample at [authSample.html](https://github.com/google/google-api-javascript-client/blob/master/samples/authSample.html).
 
-It's called "authorized" access because the user must give the application direct authorization to use personal data. Simple web-based applications using JavaScript usually get this authorization the way this example does: by displaying button for the user to click. This action triggers a call to a Google auth server, which pops up a standard authorization dialog. For details, see the [Authentication page](/api-client-library/javascript/features/authentication).
+It's called "authorized" access because the user must give the application direct authorization to use personal data. Simple web-based applications using JavaScript usually get this authorization the way this example does: by displaying button for the user to click. This action triggers a call to a Google auth server, which pops up a standard authorization dialog. For details, see the [Authentication page](auth.md).
 
 **Note:** Here we use `gapi.load('client:auth2', ...)` to load both the `client` module (for dealing with API requests) and the `auth2` module (for dealing with OAuth 2.0) upfront. The `gapi.client.init` fuction lazily loads `auth2` if it is needed. If you are sure your app needs auth, loading the two modules `'client:auth2'` together before you call `gapi.client.init` will save one script load request.
 
-To make `gapi.client.init` set up OAuth correctly, you would have to assign the `clientID` variable the client ID generated when you registered your application (again, for instructions see the [Getting Started](/api-client-library/javascript/start/start-js#Getaccesskeysforyourapplication) page). The other parameter is `scope`, which in this case is just the scope for user profile permission.
+To make `gapi.client.init` set up OAuth correctly, you would have to assign the `clientID` variable the client ID generated when you registered your application (for instructions see [Integrating Google Sign-In into your web app](https://developers.google.com/identity/sign-in/web/sign-in)). The other parameter is `scope`, which in this case is just the scope for user profile permission.
 
 When the user clicks **Authorize**, the `gapi.auth2.getAuthInstance().signIn()` function is called, which shows user a popup window to let user authorize. Note that the `gapi.auth2.getAuthInstance().signIn()` can be only called from a user interaction context for most browsers (i.e. do not call it when your app starts, but call it in a button click handler).
 
@@ -88,4 +88,4 @@ The following code snippet shows how to load the library without blocking UI loa
 
 ## Putting it all together
 
-The file [authSample.html](https://github.com/google/google-api-javascript-client/blob/master/samples/authSample.html) expands on the concepts on this page and provides a more complete example of making an authenticated call to the Google People API.
+The file [authSample.html](https://github.com/google/google-api-javascript-client/blob/master/samples/authSample.html) expands on the concepts on this page and provides a more complete example of making an authenticated call to the Google People API.