updated key of oauth_token to align with ios. Also added aouth_token_secret in the hash/map

Author: shohey1226

android/src/main/java/io/fullstack/oauth/OAuthManagerModule.java

@@ -409,6 +409,7 @@ private WritableMap accessTokenResponse(
     resp.putString("provider", providerName);
     String uuid = (String) accessTokenMap.get("user_id");
     response.putString("uuid", uuid);
+    String oauthTokenSecret = (String) accessTokenMap.get("oauth_token_secret");
 
     String tokenType = (String) accessTokenMap.get("token_type");
     if (tokenType == null) {
@@ -418,7 +419,8 @@ private WritableMap accessTokenResponse(
     String consumerKey = (String) cfg.get("consumer_key");
 
     WritableMap credentials = Arguments.createMap();
-    credentials.putString("accessToken", accessToken.getToken());
+    credentials.putString("access_token", accessToken.getToken());
+    credentials.putString("access_token_secret", oauthTokenSecret);
     credentials.putString("type", tokenType);
     // credentials.putString("scope", accessToken.getScope());
     credentials.putString("consumerKey", consumerKey);