added credential type annotations

Author: Salakar

…java/io/fullstack/firestack/Package.java …ullstack/firestack/FirestackPackage.javaandroid/src/main/java/io/fullstack/firestack/Package.java renamed to android/src/main/java/io/fullstack/firestack/FirestackPackage.java android/src/main/java/io/fullstack/firestack/Package.java renamed to android/src/main/java/io/fullstack/firestack/FirestackPackage.java

@@ -13,10 +13,10 @@
 import java.util.Collections;
 
 @SuppressWarnings("unused")
-public class Package implements ReactPackage {
+public class FirestackPackage implements ReactPackage {
     private Context mContext;
 
-    public Package() {
+    public FirestackPackage() {
     }
     /**
      * @param reactContext react application context that can be used to create modules

lib/modules/auth.js

@@ -9,6 +9,7 @@ const FirestackAuth = NativeModules.FirestackAuth;
 const FirestackAuthEvt = new NativeEventEmitter(FirestackAuth);
 
 type AuthResultType = { authenticated: boolean, user: Object|null };
+type CredentialType = { provider: string, token: string, secret: string };
 
 export default class Auth extends Base {
   _user: User|null;
@@ -138,15 +139,15 @@ export default class Auth extends Base {
    * Sign the user in with a third-party authentication provider
    * @return {Promise}           A promise resolved upon completion
    */
-  signInWithCredential(credential): Promise<Object> {
+  signInWithCredential(credential: CredentialType): Promise<Object> {
     return promisify('signInWithProvider', FirestackAuth)(credential.provider, credential.token, credential.secret);
   }
 
   /**
    * Re-authenticate a user with a third-party authentication provider
    * @return {Promise}         A promise resolved upon completion
    */
-  reauthenticateUser(credential): Promise<Object> {
+  reauthenticateUser(credential: CredentialType): Promise<Object> {
     return promisify('reauthenticateWithCredentialForProvider', FirestackAuth)(credential.provider, credential.token, credential.secret);
   }