Make the app parameter optional

Author: chrisbianca

README.md

@@ -11,7 +11,7 @@ Automatically store Device and FCM Token information for Firebase Auth Users in
 Add the following dependency to your `app/build.gradle`:
 
 ```
-implementation "com.csfrequency.firebase.devicestore:firebase-device-store:0.1.2"
+implementation "com.csfrequency.firebase.devicestore:firebase-device-store:0.1.3"
 ```
 
 ## Example usage
@@ -71,7 +71,7 @@ Create a new DeviceStore.
 Parameters:
 
 - `context`: `Context` the application context
-- `app`: `FirebaseApp` the Firebase App to use
+- `app`: `FirebaseApp` (Optional) the Firebase App to use. Defaults to the default Firebase App.
 - `collectionPath`: (Optional) `string` the Cloud Firestore collection where devices should be stored. Defaults to `user-devices`.
 
 Returns a `FirebaseDeviceStore`.

build.gradle

@@ -64,7 +64,7 @@ ext {
 }
 
 group = publishedGroupId
-version = '0.1.2'
+version = '0.1.3'
 
 install {
     repositories.mavenInstaller {

src/main/java/com/csfrequency/firebase/devicestore/FirebaseDeviceStore.java

@@ -52,6 +52,10 @@ public class FirebaseDeviceStore {
   private FirebaseUser currentUser = null;
   private boolean subscribed = false;
 
+  public FirebaseDeviceStore(Context context) {
+    this(context, FirebaseApp.getInstance(), DEFAULT_COLLECTION_PATH);
+  }
+
   public FirebaseDeviceStore(Context context, FirebaseApp app) {
     this(context, app, DEFAULT_COLLECTION_PATH);
   }