Fix #34

1) Add this library to your project

```gradle

dependencies {

    implementation "com.github.nextcloud:android-SingleSignOn:master-SNAPSHOT"

repositories {

    ...

    maven { url "https://jitpack.io" }

}

```

2) Add the following permission to your `AndroidManifest.xml`

```xml

<uses-permission android:name="com.nextcloud.android.sso"/>

dependencies {

    implementation "com.github.nextcloud:android-SingleSignOn:0.1.2"

}

```

3) To choose an account, include the following code in your login dialog:

2) To choose an account, include the following code in your login dialog:

```java

private void openAccountChooser() {