Update README.md (#305)

* Update README.md

Removed parts that are no longer true after library refactor and cleanup some time ago. Fixed broken link to API reference.

Author: veronikapetruskova

auth-lib/README.md

@@ -1,10 +1,9 @@
-# Spotify Authentication Library
+# Spotify Auth Library
 
 [![Build Status](https://travis-ci.org/spotify/android-auth.svg?branch=master)](https://travis-ci.org/spotify/android-auth)
 [![Maven Central](https://img.shields.io/maven-central/v/com.spotify.android/auth.svg)](https://search.maven.org/search?q=g:com.spotify.android)
 
-This library is responsible for authenticating the user and fetching the access token
-that can subsequently be used to play music or in requests to the [Spotify Web API](https://developer.spotify.com/web-api/).
+This library is responsible for authenticating the user and fetching the authorization code/access token that can subsequently be used to play music or in requests to the [Spotify Web API](https://developer.spotify.com/web-api/).
 
 # Integrating the library into your project
 
@@ -22,53 +21,20 @@ repositories {
 }
 ```
 
-To learn more about working with authentication see the
-[Authentication Guide](https://developer.spotify.com/technologies/spotify-android-sdk/android-sdk-authentication-guide/)
-and the [API reference](https://developer.spotify.com/android-sdk-docs/authentication) on the developer site.
+To learn more see the [Authentication Guide](https://developer.spotify.com/technologies/spotify-android-sdk/android-sdk-authentication-guide/)
+and the [API reference](https://spotify.github.io/android-sdk/auth-lib/docs/index.html).
 
 The following entries are merged into your manifest when you add the libary:
 
 ```xml
 <uses-permission android:name="android.permission.INTERNET"/>
 
 <activity
-    android:exported="true"
-    android:name="com.spotify.sdk.android.authentication.AuthCallbackActivity"
-    android:theme="@android:style/Theme.Translucent.NoTitleBar">
-
-    <intent-filter>
-        <action android:name="android.intent.action.VIEW"/>
-        <category android:name="android.intent.category.DEFAULT"/>
-        <category android:name="android.intent.category.BROWSABLE"/>
-
-        <data
-            android:scheme="@string/com_spotify_sdk_redirect_scheme"
-            android:host="@string/com_spotify_sdk_redirect_host"/>
-    </intent-filter>
-</activity>
-
-<activity
-    android:name="com.spotify.sdk.android.authentication.LoginActivity"
+    android:name="com.spotify.sdk.android.auth.LoginActivity"
     android:theme="@android:style/Theme.Translucent.NoTitleBar">
 </activity>
 ```
 
-You will need to add the following strings to your project to enable Chrome CustomTabs
-login flow:
-
-```xml
-<resources>
-    <string name="com_spotify_sdk_redirect_scheme">yourscheme</string>
-    <string name="com_spotify_sdk_redirect_host">yourhost</string>
-</resources>
-```
-
-So, if you provided `bestapp://ismyapp` as a redirect URI in [the developer console](https://developer.spotify.com/my-applications/#!/applications)
-then you set `com_spotify_sdk_redirect_scheme` to `bestapp` and `com_spotify_sdk_redirect_host` to `ismyapp`.
-
-Since Chrome CustomTabs share credentials with the Chrome instance you have installed
-you get much better experience logging users in compare to WebView flow.
-
 # Sample Code
 
 Checkout [the sample project](https://github.com/spotify/android-sdk/tree/master/auth-sample).